The illusion lefties believe: Gamergate people irrationally hate "strong female protagonists" and anytime a female is injected into a game (e.g. Horizon Zero Dawn) it's exclusively to make a political statement and will hate on the game regardless of the quality of the game.

The cuckoldry is there to stress the irrational hatred. That the bigot cares more that his wife's kid is a girl than it not being his kid.