Splatoon's Law

Splatoon's Law states that the vast majority of people who pick a female character in video games when it has no effect on gameplay are actually men.
Splatoon, for example, has a primarily male playerbase but around half or more of the players will choose a female inkling.

Guy 1: Huh, I didn't know this many girls played Pokémon Unite.
Goy 2: Splatoon's Law says they're all probably dudes.