You might consider the hypothesis that FrameBenignly appreciates this and was making a joke. This seems much more likely to me than that s/he actually thinks no one said they were born in May.

(Of course, maybe I'm missing a meta-joke where you pretend to take FrameBenignly at face value just as s/he pretended to take the alleged survey data at face value. But then maybe you're now missing a meta-meta-joke where I pretend to take you at face value...)