But, A.) you don't know if these "facts" are true, so they shouldn't really add much weight, and B.) not all situations come down to something so specific and citable. Sometimes, people are just really obnoxious to be around, and they're rude and impatient and temperamental and it's a daily thing and that's all there is to it, and you can't really boil that down to such a nice clean sentence as in your example.

Annecdotal, not factual. And both should be treated with same level of scrutiny.

Anecdotes are not the opposite to facts. They are only opposites to whole facts.