I like Gundy. College football is better with him in it. But, it's not like some random shirt showed up in the mail. On April 8, 2020 he was critical of the negative reporting of the "mainstream media" regarding Covid. Then, continued with this:
"I tell you what's funny is, I was flipping through stations. I found one—I don't even know if anybody knows about this—it's called OAN. It's One America News. And it was so refreshing. They just report the news. There's no commentary. There's no opinions on this. There's no left. There's no right. They just reported the news. And I've been watching them the last week, because they're giving us the news and giving us more information—in my opinion—some of the positives are coming out. So, that was refreshing."
Two days later, OAN emailed him to send him the shirt and Gundy immediately responded with enthusiasm.
I don't know how anyone could watch OAN for any amount of time and claim it is not opinion based, but whatever, he made a mistake. It happens. As far as not knowing his position on any political issue, his full April 8, 2020 statement gives a pretty decent look into how he leans, and there's not anything wrong with that, as he's in line with about half the country.