I think you may be mistaken here. Looking at the other comments, I don't believe they're trying to be inflammatory or just trying to get a rise out of people. The user could be say, intersex, physically disabled or both.

Some people don't identify with a particular gender. I don't have any issue with my gender identity, but we just have to take the word of people who say they do.

These can be legitimately sensitive things to some people and I'm of the opinion that a sincere adult response is not to silence their voices.