Depends on if the character's supposed to be a self insert. In a game with deep customization you may be trying to make yourself, and not playing as Lara Croft or Geralt, so being able to choose your pronouns helps immersion, and immersion's a big deal to many players who'll take it anywhere they can get it in a game, whether it's pronouns, or being able to see your torso and feet when you look down.