I'm a huge MST3K fan, so of course, I have loved Mike's work for years (unfortunately, I didn't get fully into MST3K until 1999, so I wasn't able to enjoy it at the time it was out like I should have!)
I have every episode of MST3K that has ever been released, except for the one lost KTMA episode of Star Force: Fugitive Alien 2. I used to fall asleep listening to a random episode in my dorm/at home. So, yeah, I adore the show.
Not only that, but I've been listening to both 372 Pages We'll Never Get Back (though I've dropped off after the Ernest Cline novels) and Like Trees Walking, which is his podcast he does with his pastor, David Berge.
So I've been well aware of Mike's Christian and conservative leanings for years. And, given my own movement from a more moderate/conservative political standing to a more liberal/progressive stance, I was willing to forgive and forget some of the prior things he's said about George W. Bush and reading National Review and so on. People that age don't tend to change, but you never know. Listening to both of those podcasts, I knew he was more evangelical, but he tended to keep most of his politics out of the conversation, so I still felt like, "Eh, he's not throwing his opinions at me, so whatever."
I had no idea he had this Audio Mullet podcast until about a month ago, and I saw it was with Tennapel, and I was like, "No thanks." But I should have known then that was bad news. I knew he was conservative and Evangelical, but if he's full MAGA and a Trump supporter, that's a real gut punch.