OK. I’m going out on a limb here so don’t shoot me down. But you can choose to take offence or not. I work with someone with a broad Scots accent. We had a trans woman in our care, she was in fact intersex and had mostly lived as a man before making the change and maybe as such is coming from a different place than some trans. Anyway my colleague ended a conversation with “Och, you’re a good man you are”. There was a rather horrible pause, at least I wanted to fall through the floor, but I said “Don’t worry X, she’s just Scottish and calls everyone Good Man”. Moment averted, laughter all round, no complaints. I dread to think what would happen with some of these fragile young trans if she said that, when you read about teachers getting disciplined for calling a group of girls plus one trans “Girls”.
But there are lots of times when one can choose to take offence or not. A friend of my parents, noting my obvious pregnancy said “oh my daughter’s having a baby soon too, but she’s one of those elderly mothers”. I said “same as me then”. He was so mortified, it was really funny and I certainly didn’t take offence.
And what about those occasional cases of twins where one is coloured and one is white. What insolent remarks they have to endure, and their parents, as people question their parentage, make wrong assumptions about them being best friends, not twins, ask outright rude questions.
Really, life is too short. Let it run off like water from a ducks back. Feel sorry for the other person’s ignorance if that seems appropriate. See the funny side. Or just ignore it.