Immature because he went to HBCU originally and blazed his own trail?
You gotta look at it from the other side, young black top notch athlete goes to an HBCU him and Deion absolutely brought the profile of the HBCU league up severely. That's fantastic not only for him but from a general population and cultural perspective, beyond football!
I understand your perspective of didn't challenge himself for harder competition and rightfully so, but the above statement is true, and he was loyal to Deion Sanders and followed him and its really worked out great for him professionally, and as someone else mentioned he's an Academic All American as well, he's not messing with co-eds and is on locked down regarding that.
So with the above being true, if your own son was an Academic All American, potentially top overall NFL pick, does well financially, works hard and has a loving relationship, you would turn around and call your son immature and desecrate him because he didn't play in the right conference to challenge himself evcen though he's going to be the #1 pick?
I think fans and general population have really REALLY high standards for athletes because of potentially optics (in this case Sanders and Heisman poses), which aren't even that bad.