Being pragmatic when answering this question is quite important. There are several factors against the likelihood of Haynes King, or any GT player for that matter, being in the Heisman conversation.
For all intents and purposes it has become a media-driven popularity contest.
Case in point, Travis Hunter won because of the hype around Colorado and Deion Sanders. It was also recognition for his two-way playing talent. However, a robust argument can be made for Jeanty. He really should have won it but being from Boise State impacted his winning. Similar handicap would apply to HK.
Bottom line, you have to not only be a very impactful player for your team, but also play for a large-market program or have some type of media-darling narrative. All 3 of those requirements must converge to win the Heisman trophy in today’s game.