> You think these people would suddenly stop needing an outlet for their emotions?

It is not an outlet for emotions that would need to be expressed similarly. It on itself creates emotions and social structures that make those expressions violent.

> They'll find a different way of doing the same thing, around a different theme.

Some of them will, some of them wont. They wont be in such a large pack in the same place at the same time. There will be less peer pressure to participate in these groups on young men and less validation.

They will have much harder time to organize too.