Yup, this is where I draw the line. Want to have an operation, change your name, go for it. None of my business.
But I draw the line in making me participate. I don't agree with it, but I'll let you live your own life. I don't believe an operation and hormone treatments is enough to switch genders. They are not a "she" to me, so don't make me refer to them as a woman. If they legally changed their name, I'll play along with that. You were Robert yesterday then Roberta today, whatever.
Just don't insist I have to acknowledge you are something you are not. I don't understand why I am expected to participate in their little fantasy.
Really, showing a little courtesy is making you participate? Personally I don't get it but it has zero effect on me. Neither does what name or title someone wants to be addressed by. This is you, and others, wanting to make sure everyone constantly knows you are against that philosophically, not that you are participating in squat. It's about people who constantly have to let "her" know they disprove. OK fine people I'm sure she got it now move on. Guess what the job has rules about how you have to treat people and by expressing that judgement you are violating those rules.