It's probably best to read the whole thread before pontificating. The poster in question first stated that our QB, without an IU offer, would have been "bound for the MAC." That's not an opinion. It's factually erroneous and unfairly casts the kid in a bad light. The poster deserved to be called out for this.
Never one to admit a mistake, though, he wouldn't let it go. Subsequent comments about the QB included claims that he's a "MAC-level guy," "not P5 material," and "can't win in the Big Ten."
I haven't looked at the board rules in a while, but I'm virtually certain that shots like this against a current player are not permitted. And, just as an FYI, this poster has been banned at least a dozen times in the past year, under an assortment of user names, for inappropriate posts, so there's a pattern here.