This is entirely men's fault. Yes, I said that. We ought to own this shit.
In the 90s, this liberal, cucked, beta trend arose when sluts, loud obnoxious cunts and "geek/gamer girls" started to get pedestalised by the liberal nerd subculture. Remember, the culture is determined by those who make money. The same liberal nerds (of which I was one for a long time, I admit it) started to make money and went mainstream as a result. They - or we - were hoping that these "slutty gamer girls" would be our ticket out of inceldom, that they would adopt the same interests as us, and because they are slutty, fuck us.
So instead of shaming sluts, we glorified them, and now here we fucking are.