The notion that PUA started in the 90's is just wrong. This term itself was already embedded in the popular consciousness before that:
1987
The self-help book engine had revved up long before the movie:
1977
And the cultural notion of the urbane male who can charm his way into any woman's heart goes back to long, long before that. The concept of a womanizer, and the ambition to emulate this persona, is perhaps most famously embodied by the man whose name is synonymous with the term:
https://en.wikipedia.org/wiki/Giacomo_Casanova
Yet he's not even the first. There are fictional predecessors:
https://en.wikipedia.org/wiki/Don_Juan
Are you really such a philistine that you believe men didn't embrace the dream they could condition themselves to become lovers of conquest before the 1990's? No wonder you're attempting to conflate the men's rights movement with incel culture. It's absurd and ignorant. It's a brazen attempt to smear all of the legitimate grievances voiced by men dating back to the 70's with a bunch of losers who by coincidence happen to have a few things in common with some of those who raise these issues.
Incels evolved as a group of radically angry young men focused singularly on their inability to succeed with women, and the perverted notion that they were
owed sex by women, without needing to earn it, in dark subforums of the internet like 4chan. The first champion was Elliott Rodgers who explicitly conducted his terrorist attack with these values articulated in a manifesto in 2014.
What the hell are they teaching over at Reddit?