You cannot compel people to use certain words
And I wouldn't want to, although I would avoid those being deliberately offensive.
I think of all the issues there are with the new wave of transgender people that this one possibly isn't a battle worth having tbh.
Knowing that some (certainly not all) wouldn't call my relative the pronoun of choice, and having seen the damage that has done in the past makes it hard for people like me to stand and be counted amongst those who's views I agree with for the most part though.
Surely a middle ground can be achieved somewhere.