Would you be this hard-line on a tourettes sufferer with coprolalia? Society seems more ready to make concessions for them. Terry was closer to the illness "uncanny valley" for some, I guess.
It's a completely different scenario. Someone with tourrettes knows what just happened. They're probably deathly embarrassed and apologetic.
In the schizophrenic case, they're being aggressive, hurtful, belligerent -- no one is obligated to sit through that. There's no reasoning with them, there's not even a discussion happening.
I'm sympathetic to Terry. His illness turned him into a right bastard, though. If someone's illness caused them to punch people, I don't want to be around them because I don't want them to punch me. It's not because I think it makes them a bad person. I still don't want to be punched.
And darned if I'm going to be the one to tell a black person that they have to let someone call them the n-word repeatedly without wanting that person to go away.