This is nonsense. Let's break it down.
On the year, defenders did a very poor job of holding him down overall. Because he's good.
They're impressed because he took a lot of shots and made a much higher percentage of them than Adams did with his lesser attempts. Usage is a skill curve... the more shots you take, the harder it is to shoot well. Of the 27 guys who used more possession than Gray did, Jawun Evans and Mike Daum are the only two who used them more effectively, and Evans is now in the NBA and Daum is the best player most people haven't heard of. The not caring about the team thing is a personal attack based on nothing.
High usage players create easier shots for their teammates not just by actual assists, but by allowing them to take easier shots and not force things. Read up on usage and skill curves,
this is a good primer featuring an old friend of ours. So by taking and making a lot of shots efficiently, he's effectively making his teammates harder to control. That's why:
He allows his teammates to be put in positions to succeed. Now that being said, you might still control them easier this year because most of them suck, but that's not Gray's fault.
This could all literally be about Gray if you swapped out Gray's name for Jalen, except Gray performed way better even under those targeted D circumstances. You guys are creating narratives about how amazing Jalen was because he flashed NBA potential in a few games, but on the whole he was much worse than Gray and both the stats and the performance of the respective offenses makes it abundantly clear.