That's not entirely true. From the snippet of the OP Reddit post, the husband:

"I don’t even know what to say. I’m shocked I married somebody willing to throw away our entire life over politics. Last week we were happy, today we’re getting divorced. She won’t have a discussion, she says nothing will change her mind. Insists she is going to report my parents because they live off of disability but my dad does some cash work auto repair, so now I’m worried for my family."

But. We have to take his word that he's being completely truthful here and believe that he has done nothing nor said anything to provoke those words as a defense.

But again, by his words, she won't listen to his pleas, his "reason". And he's MAGA. Actual reason isn't generally part of their skill set.