We can speculate about what makes the holodeck inferior to the ones in the future in order to establish continuity, while we've only been shown 6 episodes. But don't you think discovery will contradict those excuses in due time?
We were doing so well for a moment there that I shall resist my impulse to reply snarkily with nothing but a link to the Wikipedia article for "slippery slope fallacy"...*resist! resist!*
As others have said, it seems to me like they know generally what they're about and where the lines are, and while they
may try to push and bend them a little—they're perfectly allowed and perhaps even
obligated to do that, dramatically speaking—I don't think they'll deliberately
break them, unless it's to a purpose. There are always inconsistencies that creep in unintentionally from writers not having fully understood the source material—"Flashback" (VGR) is rife with them; it isn't just this "issue" about holodecks and replicators—but we'll work them out. (Though
we don't always fully understand the source material, either!)
Ah, but you see, these real-world examples illustrate
my point too, now that I look: early "0G" wireless mobile phones were
not truly
cellular phones at all (let alone "cellphones" or later "smartphones"), and before that there were
phones that were mobile, but relied on wires. If someone said there was "no internet in the 1970s" or "no World Wide Web in the 1980s" they wouldn't be wrong even though most or all of the precursors to them existed.
I like the inclusion of the sim room in DSC. The fact that this (and the holo-com technology) have been around for longer than we thought but in an inferior state really adds to the Trek universe IMO. The video Philip Guyott
linked to illustrates that quite nicely.
That video is indeed a great concise little summary. I somehow missed it at first, so thanks for pointing it out again.