Then you’ve always been wrong. Rice is widely considered the greatest WR of all time. He’s even widely considered one of the two best football players of all time. That’s because he’s the opposite of overrated. On every level.
You can try to list as many players as you’d like that you feel don’t apply, but the truth is a lot of young players suffer from drops coming into the league. And a lot of them have gone on to become good or exceptional players.
We have no way of knowing what Preston Williams will become. He might become a good or exceptional player. He might not. But his troubles this season don‘t provide the end all, be all answer. That’s the point going over the instant gratification crowds head.