Even humans have trouble deciding (a) what constitutes "suitable content" and (b) whether we should be deciding that for other people. So of course our current algorithms don't take that into account, since we can't define it in the first place.

Maybe one day AI will get to the point where people will accept its decisions on such matters (knowing humanity, I deem this unlikely), but for now, there's no way to do that beyond just removing that content in the first place. And then you get into a huge debacle where people complain about censorship, and... yeah, it's not really a solvable problem.