Reviews notes, "hmmm, Hunter won the Bednarik Award, must be good at defense
the Lott IMPACT Award, more proof he's good at defense, Paul Hornung Award shows that he is versatile, the Walter Camp award, Big 12 defender of the year, oh and look at that, the Fred Biletnikoff Award given to the best WR in the game. Nah, this guy doesn't deserve the Heisman."
You can't say, "well, if he didn't play defense and offense, he wouldn't have won the award." That's like saying if Jeanty played O-line he wouldn't be Heisman worthy. Hunter played both positions, and he did so at an extremely high level. He has all accolades you claim he lacks.