"No sane people" sounds like a "no true scotsman" argument. The fact that you felt the need to slip "sane" in there suggests that you suspect that some people's feelings are actually hurt. And if someone's feelings are hurt, you just dismissed them by calling them insane. This merely seems like a nastier way to express your disagreement, rather than a justification of it. There's a pretty big distinction between "people aren't offended" and "people ought not to be offended".