"As a trans woman" I honestly hate that kinda shit so much, especially when you've been explicit about your pronouns. Cis people don't know how invalidating getting called "man" is when you've fought for years to be seen as a woman. And the "oh they just call everyone dude/man" thing is BS. It's easy to avoid if you actually try. The more it's waived off as being "fine because they do it to everyone" the more that person doesn't learn to adapt and change their language.