Difference against violence of past generation is NOT kids rough housing. It was real fights, real hits, real injuries. Real robbery, real violence toward (say) partners, real knife or real gun. Nice manipulative technique you used. But you know what? If there are less kids bullying other kids, that is good thing too. Because while "rough housing" between two consenting kids is fine, one kid bullying the other is often called rough housing by those who want to pretend every thing is fine.
Keeping control over natural impulse to not use condom, to have random sex, to take heroin, to hit other people is a good thing. We have many natural impulses that are better off to be controlled. All of these harm not just the person who is doing it, but others too.
False equivalency. "More violent" does not mean "violent". Kids rough housing are technically being violent. Are you really worried about that?
> All of these are kids making better choices.
Or it's kids not having natural impulses that are inherent to all human beings. And that would be a serious problem.