I see your point and I agree with it, but that is not at all what I read in the quote where the author dismisses the assertion that most men aren't violent by asserting that they are "programmed from birth" to be violent, and as such the fact that they haven't been is no reason to not treat them as if they had been.
As for the expectation of violence in media, I'd say that the expectation is, today, far more gender neutral as we have violent and non violent protagonists of both genders in media. In some respects, the expectation is for men to show more restraint since inter-gender violence is not seen the same way depending on the gender of the aggressor (the fact that men are topically stronger obviously plays a role here).
That said I agree with you that better role models are needed (we need more loving male protagonists and we need to see them triumph over situations where muscle fails). We also, as you shared in another post, need to do everything we can to get more men into services and care, as those men will be on the front lines to help give boys a more nuanced view on what it means to be a man.
The answer is in the article I think.
These groups thrive in the void that is self help for men.
The classic feminist discourse doesn't speak to men as it was designed by and for women to allow emancipation.
The disconnect with classical feminism is best evocked by the trans community where trans men explain how surprised they were at the reality of being a man in today's world.
There isn't much if anything around to help young men learn how to be a man in the 21st century, so they are inevitably drawn to the simple but toxic solutions people like Andrew Tate and Jordan Peterson provide.
This void used to be filled with the pick-up artist community, so this issue isn't new.
The obvious counter would be for feminist groups like ours to also provide non toxic solutions to the issues boys and men face so that they can go into the world.
There is a way to be manly and tolerant and express your needs and wants healthily. We're learning it the hard way. We need to make it easier for the next generation. I'm saying this as a father of 3 boys.
Pet peeve, but even the name feminism is going to be a hard sell when you're trying to explain to boys how to be men.