I have to think that NBA teams aren't run by complete idiots. I imagine they put a lot of time, effort, and money into their recruitment.
Maybe a guy who would be on the fringe of getting selected benefits by extra notice, but you have to figure that teams are looking at Simmons already.
So assuming they think he is wonderful, but unable to produce the miracle needed to get his team over the the line, will they think any less of him because of the college?
Ironically HAD his excellence lifted his entire team into contention, that would have be a gigantic plus for him and would make made his choice of college inspired.
If you're arguing that his inability to be judged on his tourney performance counts against him, its not logical. If he plays in the tourney and does better than expected, sure his stocks go up. But you can't expect that he'll do better than expected.
Now yes, I understand that he needs the appropriate competition in which to show-case his talents. Winning MVP of the Idaho BF-league probably doesn't count for much.
But he's starting as a freshman in a Div 1 team, it doesn't get much better than that.
Furthermore, whilst I don't know the strength of his competition, had he gone to a stronger program, would he be getting the same minutes?