"Pretentious" might be signalling of high status [1]that's irritating to receive, which leads to a large new topic. When is signalling fun vs. not fun? Is it just a matter of what's a positive signal in the recipient's group?

[1] Signalling about sports teams isn't pretentious, even when it's annoying. I don't think there's a word for the annoyingness of middle-to-low status signaling. "Vulgar" covers some cases, but not most of them.