How do you actually know this?
Being 'supportive' seems to only be affirmation only.
Yet we've already crossed that bridge in terms of understanding that affirmation only can be problematic.
The idea that you don't care because you don't support changing pronouns is pretty virtue signally and doesn't really address a whole bag of things. The catch all doesn't reflect reality of experience.
It is a deeply complex thing.
Yet again it's about simplifing things to the narrowest definitions and purely about identity.
There are people here with a huge breathe of experience and understanding on this subject...