True, but there may have been a backlash because TNG did have a tendency to lay it on thick, even exaggerate . The list of things they say they don't do or fear anymore, the things they do or believe is almost bizarre at least from our point of view. It had too much of a holier than thou aspect that many fans misinterpret.
Even the way they admitted they still had flaws had a self congratulating tone to it.
Seriously though, then there's the unreal behavior--as I said before about the ending of a certain episode where Yar just told Picard that one of the alien ambassadors may have been killed and prepared to be eaten by its enemy ambassadors. Picard shrugs says he should take a break and that Riker can take care of it. The background music is indicating this is a funny moment, while Troi smiles.
Wtf? It's not easy to see it as a mature show when you remember these scenes.
Both of the rival alien ambassadors had either a heavy reptilian or primate like appearance. If they looked more like humans, and the crew acted like this, the characters and the fans would have been horrified.
TNG is a classic, but it had somewhat of a hollow fantasy aspect to it.
Troi, who wears a cleavage revealing outfit everyday instead of a uniform. Ships that carries children and families aboard that end up getting wiped out by some disaster. A service that says its not the military and yet it is the only service being sent to protect against invasion.
There were a lot of things TNG was naïve about, avoided, ignored . Behr made some good points about it too in some episodes of DS9. It bought up topics that TNG never bothered to think about but could have.