I've just started reading this thread, so I apologize if it's been addressed. I remember what you said: Initially, 5E was viewed as a return to form for old-school play. I believe this was because it was a "keep the lights on" edition to start with, and the devs were very much trying to attract the lapsed audience.
Then, with Covid, Stranger Things, Critical Role ... a lot of other things, it became popular. There was a huge influx of new players who were much younger and have (in my experience) a very different way of looking at RPGs. And I definitely believe that WotC pivoted to accommodate them because that's where they saw all the new money coming from.
5E right now is (again, in my opinion) trying to very much not be an old-school game.