Spoiler Alert : If you haven't watched Butters Bottom Bitch and All of season 20, don't read the post, close the tab and go watch them.

In "Butters bottom bitch" Butters explains to Kyle, that a girlfirend is way more expensive than a prostitute. The romantic attention and sex is still paid for in a relationship.

And in season 20, all the girls break up with the boys, Butters is the MGTOW, Kyle is the TRP, and Cartman is the blue pill white knight mangina. Butters explains to cartman that women crawl into your heart and shit on leaving you devastated, Cartman still thinks Heidi is a NAWALT, butters explains further that he has been there.
Eventually Cartman is persuaded, dumps Heidi , knowing that the future is female supremacist. I think MGTOW is becoming mainstream