Mine is the grammar nazi/the person who treats (what are imo) casual online discussions like dissertations.
I know how to write and make convincing points but I’m not gonna sweat that the point I made was a bit broad or that I didn’t capitalize the right thing.
Generally speaking, if you could tell what I meant and still correct or dispute my point with me, that’s my online etiquette pet peeve.
English doesn’t even have serious rules. I’ve been doing a TEFL course. Like so much grammar and things are totally contrived and don’t actually make sense. Just sort of where you learn by lots of trial and error and everyone has a slightly different system.
So don’t sweat it. Grammar nazis are basically just nazis.