I think tf2 usually gets ignored when it comes to this topic because it is sorta kinda satire, the characters aren't really intended to be self inserts or idealized empowered people, they are looney tunes caricatures with the gender expectations of the era being satirized baked right in

Not trying to say it's actually woke and diverse, just that people seem to care less about a lack of diversity when the characters are all characters instead of them being templates for expression