I mean I think that’s just an overarching issue with self insert characters in general when they want to make a female lead or a male lead relatable for their audience they just leave as many things vague or blank as possible like not drawing their eyes etc so I do agree with that point
but it doesn’t stem from gender it’s just a different approach to writing a main character for a game or show that someone can “immerse” themselves in which often does fall flat unfortunately but they could still make a fleshed out interesting main character with a strong personality that also has an option for different pronouns :3