It's weird how you're moving goalposts in an analogy you created that misrepresented the situation anyway.

Some people clearly don't see a difference between mentioning a part of a relationship and just stating what their sexuality is. One is appropriate in a much broader spectrum of settings than the other, regardless of what the sexuality of the person in question is, and I feel like people who don't understand, or refuse to, are likely to be obnoxious to be around in general.