I think that's going to really depend on what kind of person you are.

As I originally said, I think had they gone "we are museum. museum protect artifacts. exhibit closed, go away. oh, and fuck you." people would've been mildly irritated, but fine. Their attempt to be tactful about it, ironically, backfired. That actually happens somewhat often to people, just in general. Tact is often very challenging, people do not have to interpret your words the way you think they normally would. It doesn't really follow any rules, it's extremely situational and inconsistent. Like rng. It depends most on exactly which specific words you used, not the content of your idea.