I never said that? I even agreed with you.
EDIT: I thought about it and I think I realize where the misunderstanding happened. I never meant to say or imply that people can't have their own thoughts about a character (I don't think policing anyone's thoughts is okay at all to do). I meant it more so in some applications. Like if you want to write a fanfic where trap character is actually trans, I think that would be cool and totally something anyone can do. If you're having a more serious discussion or writing a review or an article about a show though, in those cases I would say using the correct terminology matters.