I think you are partially right, if you just think to video games I think you see exactly the behavior you predict: young kids rebelling against PC culture by screaming obscenities of every race and creed through a $10 microphone. And I'm in deep liberal territory, no reason to think these kids are from the conservative side of the state.

But, just like the young people of the 60s, they grow out of it. They realized free love had real downsides: STDs, imperfect birth control, etc. And young people today realize that racial obscenities make it harder for them to work and grow with people of those races. Or any other PC issue. As soon as you meet someone, who is a way you didn't expect, but has skills you respect, you grow out of it.