As an example, I am cis but put my pronouns in my bio.
This is confession of an understanding trans people exist.
It supports trans people, but it also implicates transphobes.
They hate it.
And highlights that they don't.
Using your pronouns, then, is a confession not just that trans people exist, but that transphobia exists.
It implicates a system I benefit from automatically. It's a self-confession, too.
They just have to hate it.
It makes them really mad.
It's a revelatory experience.
I just suspect they especially hate the act of pronouns from cis people b/c it's a judo move that uses unjust systems they support against them.
But far more powerfully, you can use that unjust privilege to confess it on behalf of all who share it—even those who want to maintain or expand it.
I'm already blocked.
Bigots *hate* confession of privilege from people who share their privilege.
If you're privileged, I highly recommend it. It makes the world safer and better.
Highly recommend confession for this exact reason, if you are a person with privilege.