Masculinity is not the problem, it's the lack of it. A boy who says he's a girl didn't grow up around men.
I agree… I expect that the father is either weak or just didn’t spend time with the kids. But I think the role of the mother in turning the boy against his father and, by extension, against men in general, has been overlooked.
I should add that I’m not talking about Musk’s case in particular (although it may be true there), but the general phenomenon.