is another big factor, and probably the one that finally tipped the scales

means that it is not the sole motivating factor.

which means even if they are literally adolf hitler, I shouldn’t care, as long as they don’t post about gassing people on my server

Literally means that if they go around spewing crap, they get dealt with. This is not condoning hateful trolling at all. He is on the free speech side of things, but that doesn't mean he condones it at all. If you start posting bad crap, you get dealt with. Minor slights, are as the name implies, minor. Those are allowed but within strict limitations, if you start going full blown idiot, you get dealt with.