i think people have gotten a lot more aware and accepting of trans people in the last couple decades. i think the real reason why people don't seem to be bothered by the harry potter game is because most people get that whatever j.k. rowling thinks or says or does doesn't really harm trans people, that she didn't make the game, and that playing a game is just playing a game.
actually, i take that back: most people don't know about j.k. rowling's opinions. and even so over the last couple decades they've become much more aware and accepting of trans people.