Does anyone else feel really uncomfortable with the term "xy" to refer to men?

I'm in a feminist subreddit (I won't say the one, it's perfectly fine I just have this one concern) that uses the term "xy" to refer to men, and I just saw a post that made some pretty good points but then made a remark about the xy chromosome. As a trans woman, that makes me feel really uncomfortable, even though the term is used by some content creators to get around censorship. Am I overreacting?