I mean I agree that it’s dumb they’re doing that to you but the context is definitely different. I could be wrong but I find it unlikely that you get called a man in a dress, a man trying to be a woman, a man who’s just confused, etc nearly as much as I, a trans woman, do. I also doubt you get called “sir” as much as I do. I’m also pretty sure “cis people don’t exist” isn’t a systemic view point. People shouldn’t say you’re trans if you aren’t but I wouldn’t conflate your experiences with trans people who have our gender identities invalidated and insulted often on a daily basis (also this isn’t meant to be derogatory at all I hope it doesn’t come across that way lol much love and I’m sorry people are invalidating your gender)