[chc]

More like "just the one example." This same case is trotted out every time somebody wants to make this point because it does not actually seem to be a trend.

But besides that, it doesn't answer the question you were responding to. Asking someone's birth sex does not tell you what genitalia they have. It doesn't even really tell you what genitalia they had at birth. Since those salon owners say they specifically objected to the woman's current genitalia rather than the woman's status as transgender, birth sex is the wrong question to ask.