This an assumption. A poor one and I don't get it. It's Mick Jagger saying he can't like a guy because he smokes different brand of cigarettes.
Mick Jagger sings that in "Satisfaction" but thhat's a song about someone who cant get satisfaction. He has never stated that about anyone he knows in real life.
But a change should be explained. None of those shows offer one. Otherwise Picard should be great because it updated things post TNG.
You're comparing apples and oranges here.
First of all, TNG, DS9 and VOY were constructive series while PIC is just boring and destructive, a typical 2020's serie.
Second, some things just have to be rewritten due to actual events in the Gray Universe.
As for TOS, I guess that the 1990's did seem far away in the 60's when Roddenberry came up with the Eugenic Wars and WWIII. But it seems a bit odd to imagine things which were supposed to have happened in an era when we were watching TNG, DS9 and VOY. I must state that I never heard about any Eugenic wars going on at that point.
Not to mention that i found Roddenberrys visions of the Eugenic Wars and WWIII somewhat naive to say the least, sort of "oh we just have had a few small conflicts which has devastated two thirds of the planet and made it almost impossible to live on with all the radiation so we are basically back to the stone age now. But we are rebuilding everytnig and are about to start with space journeys and colonize Mars too as well in a couple of years".
In reality, if the world had gome through the Eugenic Wars and WWIII in the late 90's and early 21th century it would only have been debris left of Earth and it would have taken about thousand years or so before civilisation would have reached a point where space travel and such may have been possible-if it ever would have been.
The old German SF series
Raumpatrouille (Space Patrol) which was aired in Europe in 1966, three months before TOS started in the US had year 3000 as the time period for the very pre-TOS scenario in that series. A similar time scedule should have been more logical for TOS since we arent even close to colonise Mars in 2103.
I must add here that the creators of
Raumpatrouille had no idea about a successful SF series being about to start a few months after Raumpatrouille started and Roddenberry possible had no knowledge about a German SF series being aired shortly before TOS started. It was just a coincidence that
Raumpatrouille happened to come up with a more realistic time period for coming space adventures.
If Star Trek will keep the background stories about the Eugenic Wars and WWIII in its canon, it would actually be logical to push certain events forward for some centuries and also describe those events as not so destructive either due to the fact of how the world would look like if a REAL WWIII would happen.
Or also take the simple way out and assume that our friend Henry Starlings dabbling with time actually made that the Eugenic Wars and WWIII events never happened.
In fact, even some things stated in TNG and DS9 must be considered as obsolete too. Even if Ireland is more peaceful now than in the days when T
he High Ground was aired, we aren't even close to a unification of Ireland in 2024.
Not to mention that the Bell riots haven't happened and probably never will and that baseball is as popular as ever.
Correcting such issues and make Star Trek scenarios in our time in the Gray Universe more realistic is also more constructive than wiping out planets and messing up future scenarios in a way that they are recently doing in PIC and other lousy NuTrek series.