I just want to say that like non-normative sexual activities isn't what makes him bad. There is so much out there that two or more consenting adults can do outside the oral/vaginal/anal paradigm.
He's horrible because in his mind women are worth less than him. That somehow what he's done in this world is worth so much more than women that work more demanding jobs, or have given birth, or triumphed over adversity, like say, a man thinking a woman is basically an object and he's going to treat her like one.
I'm not really sure where this attitude comes from because it's not a natural one, we are psychologically and physically trained before birth to be dependent on women. They are our lifesavers and providers. These feeling eventually developed into sense of obligation across society and gave rise to chivalry.
There are lots of places this relationship with women can sour, though. If the mother does not provide for a child, it's been shown that it can lead to a lifetime of distrust or outright hatred of women. Another big one historically is the father or another male in a position of power in a person's life teaching them that women are lesser beings.
And then there's inceldom. An extremely unhealthy relationship with sex not based in reality. Women owe this to you, that and maybe child bearing is all they're good for, and the longer you go without it the more unhinged you become.
Like say, starting a religious sect. Or stalking a woman with 7 or 8 kids that orgasmed when her abusive Mexican husband beat her.
Andrew, I love you bro, but this aspect of your life is seriously fucked up.