His huge MAGA shift happened after his trans daughter disowned him. He thinks the school system did this to his kid and the woke people are suppressing the rights voice (AKA hate speech) on the matter.
I think there’s even a quote from an ex wife begging him to do something about it in the new book (don’t quote me on that, but im pretty sure)
So this seems like an absurd straw that broke the camels back, it’s actually coming from a real place even if there is a separate motive like taxes.
Edit: I tried to find the quote from the wife, and while there was a lot of quotes in articles, I could not find what I was thinking about. I did find some articles where the exwife shows support and is proud of their trans daughter for changing her name, so my conclusion is what I’m thinking about is probably something else not related to the daughter.