I agree that Star Trek has suffered from consistency issues throughout its run. But we (well, you

) were in a very different place in 1979 than we are today (or in 2017, when Discovery premiered). The longer something lasts the better established its elements become, and in 1979 there was vastly less canon to go off of, and hence vastly less to be upset about. Indeed, the size and scope of the Klingon re-design then may be very similar to Discovery's, but it's hardly fair to compare the two. Look at something a bit more modern, like Generations. There, we have a slightly different transporter effect than we were seeing on DS9 at the time, but we have the familiar Enterprise and Klingon BoP, looking just as we would expect. That's a different order of magnitude from what Discovery did. I think the very motivations behind changes in Discovery and changes in prior series and films are different. Bigger budgets and new filming tech always mean some amount of upscaling, in terms of effects, in terms of sets, etc. Changing writers and film crews meant inconsistencies, in both visual and story elements. Sure. None of that bothers me. That's not what was behind most of the changes in Discovery, though, as I think we all know. And the giant mea culpa they issued with the offhand corrective dialogue in S2 is basically an admission that it wasn't a good move on their part. To keep playing the Discovery S1 apologist by constantly saying, "Come on, Star Trek has never looked the same," is a little bit disingenuous, in my view.
I don't consider myself a 'Discovery Apologist'. I like (and understand) the production choices they made, and do dislike others (but still understand why they were made.)
To me though as a TOS fan who saw it on NBC, and watched reruns (and also saw and loved as well as disliked aspects of the TOS films); to me it's a bit disingenuous for some TNG era fans to make a claim like you did (IE - "oh there wasn't as much so it's not as big a deal...")
^^^
Give me a break because one reason TNG didn't go over well in it's first two seasons (when many stations were sandwiching new TNG episodes between classic TOS episodes <-- KCOP Channel 13 in the L.A. area did that for quite a while - WAS because GR decided to retcon a vasst amount of what TOS fans had loved for two decades in his attempt to make his (at the time as he called it) "real vision" for Star Trek. And yes, while TOS fans like myself bristled; eventuially TNG grew its own base of new fans some who got into everything and found they liked TOS - as well as other who thought TNG WAS the "true" version of Star Trek. It's funny to watch some (not all) TNG fans loose their sh*t when no version of old 24th century ship models appear in STP teasers and trailers, and they're all trying to come up with ANY OTHER excuse that "Hey the Production Team may redo the 24th century, like they did the 23rd. Yes, you may get a Galaxy Class on the screen at some point - but yes, it also may be 'tweaked' is some way like Pike's 1701 was for STD.
The fact is: TOS fans liked TOs, and didn't care for a lot of the retcons and GR suddenly having a different vision (probably because he was much older, and could no longer coerce young actresses onto his casting couch <--- Which he did quite a bit during the 1960ies and the run of TOS.)
But yeas, excuse me for laughing at some (not all) of the younger TNG 's fans arguments that the designs in TOS are 'too old' and any update it good; but when a TNG design aesthetic appears touched/changed again, they loose their collective sh*t.
As to budget size - I really hate when fans try to claim "TOS was done on the cheap and looked it..." because NO - it wasn't.
TOS for it's time HAD SFX shots that were on par with modern (for the time in the 1960ies) sicence fiction outing like "2001: A Space Odyssey" - and the Bridge set was a good (and expensive set to do.) Star Trek was the most expensive series on TV for it's day, and tremaijned so, even as other network science fiction shows (like "Logans Run" and others of the 1970ies).
TNG was the same way (although in it's first season it HEAVILY reused set pieces from the TOS era films; and it's sets were good enough that they were redressed and used in STV and STVI and STVII the last being the first TNG feature film). TNGs SFX were also at modern feature film level as well.
In fact the bdget differences between STD ($8 million per episode) while in the 1990ies TNG was at around $1 million per episode compared to TOS which ran between $100,000 to $200,000 back in the 1960ies. Yet funny no TNG fan calls TNG 'cheap' or 'done on a shoestring budget' even today.
Here's the facts about the franchise from 1966 to today:
- They were ALL well funded for the time in which they were produced.
- There has NEVER been real/hard continuity or consistency with any of them. No one involved has had an overarching plan for the entirety of the 'Star Trek' universe as a whole; although they may have plans for a run of episodes (DS9, ENT) - a full Season (ENT Season 3 and now STD and STP). But even within that framework, NONE have ever let an existing piece of previous continuity curtail the story that they want to tell. If they need to ignore or change something they do it; and that's gone for EVERY iteration including TOS, TAS, TNG, DS9, VOY, ENT, STD, and from the looks of it STP and all the feature films.
Hard core TNG fans had to deal with the JJ films; but even ENT pretty much kept to the "EARTH itself is pretty Utopian - no sickness, no poverty, no money" paradigm of TNG (TOS HAD money/currency, and the Federation used it too - and there was still poverty and other problems in the original TOS era).
STP is the first time TNG fans have had to deal with something they directly and dearly love being changed in a major way (more directly akin to how TNG retconned a LOT of the original TOS era).
It's not that a lot of the TOS era fans are 'apologists'. It's more that we've been through this VERY thing with Trek many times before and made peace with the fact that Trek changes.
STP is taking what many a TNG fan loved for 18 years on TV and in many ways turning it on it's ear. Many are totally fine with it, some have issues here and there, and some are losing their sh*t; but honestly, it's fun to see TNG fans go through now, what a great many of us TOS fans went through in 1987.
Bottom line: You'll live, and find things to enjoy in the new paradigm ; or you won't and move on. But in the end, (like those who made TNG in 1987) - the current producers have nothing to apologize for as they are doing what they feel is now a 'modern' take on Star Trek.