they can’t find a girl because of deeply rooted, misogynistic beliefs that turn people off
People aren't born with misogynistic beliefs. They also aren't taught them in school.
also like to see your citation for wage stagnation affecting men more than women
I'm not going to google search for you, but it's pretty easy to see that wage stagnation affects men more because traditionally, men are expected to be the provider for the household and women have traditionally had the option of not starting a career and just finding a man instead. I'm not saying that women are not affected, but they have an economic "out" that men generally don't have.
I know many, many men who aren’t the strong hunter gatherer type and have loving wives or girlfriends. The difference is those guys aren’t assholes.
I'm willing to bet that they also have stable jobs. Also, if you're one of them of course you'd know a bunch of other men who are similar; this says nothing about a large swath of men that the grandparent comment is referring to.
This doesn't invalidate the argument at all. Of course it's not a all-or-nothing situation. Elliot Rodger was from a wealthy family and had plenty of economic prospects.
This is not the simpler answer because Andrew Tate's following is a relatively new phenomenon. People hear a LOT of things growing up; what sticks with them is a product of their environment. Something like this would not have caught on in the 80s or 90s, even if the zeitgeist was more misogynistic than it is today. I'd wager every man has some kind of misogynistic influence growing up, but what matters is whether they take that to heart. When the economic situation is dire (they know they will never attain the traditional ideal of a provider) it becomes really easy to blame the "other."