 It's been decided that the only reason why anybody would ever intentionally use male pronouns when referring to a male who wants to be a female is that they're trying to hurt the person. The possibility that somebody would misgender, i.e. correctly gender, not because they want to hurt anybody, but because they value the truth and because they realize that cooperating with and affirming confusion only causes more harm to the confused individual, that possibility is discounted. It doesn't exist.