You said that couldn't be sane and rational men - therefore it must those who are insane. Which by definition are those with mental illnesses.
He didn't have ASD - his parents thought he might have it. He has no diagnosis of narcissism. While we could all play armchair psychologists, the fact is that people with mental illness are far more likely to be victims of violence and yet are constantly blamed for it which has been shown repeatedly to increase violence against us. You might not think men who hold these opinions are rational and sane, but that doesn't really mean anything. Many men, the majority of them who have no mental illnesses, hold the view that if a woman doesn't want him, it's because there is something wrong with women. If that women wants other men, then she is a slut and there is something wrong with that guy. Just look at the comments to any of his videos or news articles on it - there are a lot of people going on about this is what women need to think about when they reject men and that women need to pity shags and all sorts of things which essentially blame women for this violence. There are entire websites with thousands of members with people discussing this 'problem with women' who won't shag them. Do you think all those thousands of comments and thousands and thousands of people on those sites are all irrational people with mental illnesses? Do you really want to blame the entire MRA/organized misogynist movement (which has many common attributes with every other hate group and organization) on those with mental illnesses? Cause that's just lazy thinking and puts all the problems on someone else rather than looking at society creates these people.
People can be sadistically violent and hateful without any issues with mental wiring and to think otherwise is to pretty much agree all the horrors and violence that people with mental illnesses go through.
Seeing as the concepts that women are at fault if men are rejected and "nice guys finish last" are common tropes across all forms of media and backed by pretty much all the systems of power and even these acts have their supports, it would seem more likely to be an issue of socialization.
And it's just about "telling off" (seriously?), it's about ALL those men, who run these media and porn companies and run these places of power standing up and saying that these beliefs and their representations have no place in being positively representated. ALL men calling others out when they make those comments. Every time. It's about recognising that this isn';t about a handful, it's a lot of men involved in these movements, and that ALL men can take some responsibility and ensure that they are loud and clear on standing up for women's right to say no, right to say yes, and right not to harmed in her choice.
I'm genderqueer, but yes I do call people out. I've called women and men out when they think they can be violent to children. I called you and others out on thinking it was okay to throw people with mental illnesses and conditions under the bus when you want to dismiss that 'sane' people can do horrific acts of violence and hold vile hateful views. I've called men out on calling women cockteases and complaining about "the friend zone" even when my word on this carries far less weight than a man's. When I sit and watch TV with other people, particularly my kids, I will call out those harmful tropes so these things can be called out for what they are and discussed. They are harmful and without discussing and challenging them, they grow and continue. Silence against oppression is never neutral, it's also gives to the side that hurts. I'm against kyriarchy, and I'm upfront and not really compromising on that and the main thing that allows it continue is people who remain silent and blame those with less power.
I will never think that the feelings and comfort of the group with greater power is more important than the lives and agency and justice for those without. And in this cause, I do not care for feelings of comfort of men when they get all bundled up with the violent ones in discussion because they know that if I say some men or even many men, that gives plenty of people an excuse to say "that's not me" rather than actively look at see if that is really true. Pretty much every man I've had say 'I'm not like that' holds vile views that are exactly like that.
