Thefurrrywatcher said:
So Ive been thinking about it for a few days. Why are eeveelutions so popular on this site? I mean besides vaporeon, everyone knows that story

for one, eeveelutions are just popular in general. eevee has been sort of a secondary mascot to pikachu, with as far back as Yellow, where the player's rival is given an eevee.

they're also the defacto largest evolutionary family, meaning that an individual is more likely to have one of them as a favorite pokémon. most posts featuring one of them are likely to also feature at least one other, which leads to a sort of feedback loop.