maybe not in all cases but sometimes people use multi tags because they have no idea there is any netiquette.
would probably add some more as it is frustrating that nobody comments, even if I try to write the best content I can in my limited time.
I would use both #vyb and #proofofbrain in a generic post.
If I break some rules I am not aware of, I would be more than happy to be informed about it in the comments first. If I do it again, then I think people should be ignored / muted.
Best regards!
😎