You can't argue with people like this unfortunately. Don't let someone that gets this bent out of shape over a fictional characters pronouns upset you. If they can't even be respectful in a game lord knows how they act irl. it's always idiotic behavior over shit that doesn't affect them at all that seems to trigger them. 😒
PS Izumi do whatever the fuck you want it's your story. You can make purple aliens for all i care with pronouns i can't even pronounce. You do you!