There are people who treat their PC almost like a console, cause all they use it for is video games anyway, but they want more than what a console offers (and will spend a lot). They install whatever. Kernel anti-cheat isn't even the worst thing on those, that'd be Windows.

It's fine. Personally I keep my Mac clean. It can play a few games, which is enough for me. I also found a spare PC in e-waste, and occasionally boot it up to play games in Win10, but wouldn't care if it died.