Although Lemmy's userbase is quite large,it still is small enough that I do often see the same people in comment sections. It feels though, that I should recognise more names, because I can only remember around 5 individual ones.
I think Kolanaki, Zacharia, Margot Robbie (since she's famous already), are the ones I can remember. Maybe making a journal page for keeping track would help.
I briefly created a POTUS account on kbin and posted what I thought were obvious jokes. It got so overwhelmed with people assuming it was real that I got creeped out and immediately abandoned it. I was kinda shocked. People really just kinda...believe whatever the screen says, I guess.