There are no complaints about downvoting in this comment. What about this comment do you believe breaks the guidelines.

I'm not sure how I could of asked the original question any differently:

If someone claimed to know several albinos, and in their experience found them to all wear purple sweaters - it might might be worth finding out that they met them at the purple-sweater-albinos meetup.

If someone knows a statistically unlikely group, they are unlikely to have been selected at random, so they are not necessarily a representative sample. That's why when you put forward some element in an argument, it should be possible to interrogate it.

I didn't express any doubt that they knew intersex people, nor did I say their argument invalid - in fact I explicitly said that it might produce a bias.