Huh, that's an interesting route to take. I worry it'll become too similar to the trap of "pink isn't a girl's color, it's actually a boy's color and they switched in the XX'th century and it's the color of blood so it's manly" that I've seen a lot of people fall into (kicking myself because I was one of them). It's not a bad step to be in, in that it helps normalize normally "feminine" actions/dress/etc. as things men can wear, but it's also just... still gendered unnecessarily?
To be clear, I haven't watched it yet and still intend to, I just worry about that from your description of it.
Haha, I'm no saint, I'd like him to be better than that!
But more seriously, I agree I'm not responsible for others' routes in life, I said so at the end of my post. However, there are certain behaviors that society in general tends to disapprove of, and incel behavior is one of them. If I can help him move away from that path with my actions, I'd say that's worth doing. No?