You still don't get it, do you?
If someone asks you to call them by a different name, gender, species or whatever, then it's simple fucking decency to do it, because doing it doesn't change your life in ANY way whatsoever.
If a guy called Jake comes up to you and says 'hey dude, I'd like you to call me Sally from now on' and you say 'no, I'M going to decide what to call you', can't you see how that would make you a complete asshole? It's nothing to do with delusion, and everything to do with you not getting to decide something like this for other people that doesn't affect you and isn't your responsibility.