>>45580904I assume the reason might be because Pikachu doesn't have a gender, at least not until heart-tail Pikachu was a thing. It wasn't meant to be identifiable but someone thought it was cute enough to say "eh, whatever fine" I guess.
Pokemon also get referred to by gender in Masters by their Trainers. It's like they just don't feel like referring to every Pokemon by gender since it would be hard to keep track of.
People in /vp/ absolutely use gender only to shitpost though. Because it pisses people like you off.