I think the proper way to state this is that he didn’t make an awful decision. I still think he left too early. Based on this Forbes article, even the last player in the first round is guaranteed 3.5m. That may be more than he ever makes in the NBA.
2018 NBA Draft: First-Round Rookie Salary Projections
If he had overlapped with Jalen more there is an argument to be made that he would have been much more efficient based on not having to force it all the time and having the opposing team having to stretch their defense on two players who can penetrate.
I think he could have been a top 20 pick which would guarantee him almost $5m.
I wish him the absolute best and loved watching him dump it off to Amida, but the jury is still out on his early move. If he ends up making $10m+ On his career you can say he did it his way, he wasn’t into college and it was gonna be too much of a distraction. If he flames out this year it will still be a bad move. Either way i believe it will have cost him a couple mill.