I mean, incels seem to be angry because women say 'no' to them. They suffer from the incredible disappointment of expecting high status and loads of sex with beautiful subservient women, and from the gap between this expectation and reality. The problem is their entitlement*. Likewise, a lot of AGPs make themselves happy by indulging in appropriating women's identity and invading their spaces. They're happy because their expectation that they're entitled to us is being facilitated by a society that supports TRA over women's rights.

*Also, it's worth thinking about who encourages this entitlement. Michael Kimmel, the theorist on men and masculinity, suggests that many white men feel real grief over the loss of social mobility and dignity that they were promised in an American that is increasingly unequal and that denies dignity to many working class people. He suggests that right wing commentators are working hard to manipulate those 'valid' negative feelings into anger at women and immigrants so that men won't look at who's really to blame for their economic problems. This wouldn't explain the entitlement that rich men feel, though. I guess there are multiple causes.