dont think that’s fully accurate...more like different skill sets are being emphasized...post play and the in between game are, for the time being at least, being largely phased out of the game... a player like Kevin Mchale is largely considered among the most highly skilled low post players of all time, and in the modern game he’d get to showcase almost none of it...he’d be told to work on his 3 point shot so that some perimeter player on his team can have more space to dribble for 20 seconds before chucking a 3, or drive and kick for a 3 from someone else...does that mean one of the GOAT post oriented forwards ever is less skilled than a modern stretch forward that also occasionally walks the ball up? Not really
yes I know not every player back then was a HOF’er like mchale but giving an extreme example to make the point....there isn’t some linear line of evolution of “skills” in the NBA...it’s more like fashion where things are “different” moreso than “better”