Sure I’d hate it if you called me a TexanLady instead of a TexanFeller. But I will defend your right to call me names. Speech that offends someone doesn’t imply speech that shouldn’t be allowed.
I've been called a sissy on many an occasion. That is in fact, being misgendered, and I cared a lot when I was young. I no longer care about being mocked and I reject gender norms in general, but I'm just old enough to just realize a bully being an asshole is a tale as old as time.
I realize though that it isn't always on option for people. This can be much more challenging if it's in the workplace, or when people are younger and social acceptance is more important.
I think the trans movement would be helped massively if we just focused on that being anti-trans is just being bullying. The focus on edge-cases and ontology and essentialism of gender makes the debate much more muddy.