Marriage is a social construct not built upon love or companionship. It is just a social relation that is related to the two, with religious and legal backing to fortify it.
If you see marriage as a means to love and companionship, you are not gonna have a loving relationship. Love and companionship are completely viable (and I’d argue stronger) outside the strange little box that society tries to place it in
Fuck marriage.
I don’t think there is anything that a person of any gender can’t provide in a relationship. I do see that society shuns certain people from performing certain roles, but anyone can do any one of them.
If he is only ranting politics, he might not have anyone to talk politics with. Maybe he is the lone conservative, lapping up every scrap of talking points from Fox (or maybe Newsmax), but can’t spew them out around family who sees him as being crazy for watching Fox. If you aren’t pushing back, he probably sees you as safe, and if he is finding it hard for him to deal with political stressors, that’s probably why he is ranting and getting so emotional.