@mietze My autistic perspective is basically that many NTs take honesty and clarity as offensive, and are thus themselves habitually unwilling to just fucking say it.
Years ago I was walking around this part of town where some friends of mine (probably neurotypical, though their sons have some traits) lived, so I went up and knocked on their door. One of them answered, said, "Oh, hi, sorry, we don't want to see anybody right now," and shut the door. I left and went to the coffee-shop a few blocks away. There I encountered a mutual friend, who was in a high state of hurt feelings, because exactly the same thing had happened to him ten or twenty minutes earlier. He was furious, they'd said they didn't want to see him and slammed the door in his face. I was fucking /delighted/ that they'd said no and shut the door, instead of asking me in and letting me wonder what the fuck was going on that the vibe was so weird, feeling confused and anxious and not sure what to do, making my day and theirs worse.
Considering friend 3's anger and that it's probably a typical reaction, I have some sympathy. Though the familiar MU behavior of 'say nothing and try to get them in trouble with staff' is still just obnoxious and stupid, because, uh, callin' the cops instead of asking your neighbors to turn down the music is vicious.
ETA: I expect probably most of the ones who say 'I was never told' when staff come in are lying about it and that's far more common and far more obnoxious.