I apologize, "he" was for most of American English's history the default pronoun when gender was not known. I'm still working on using "they" instead, but I occasionally slip up.

https://en.wikipedia.org/wiki/Gender_neutrality_in_English

> Also, who says I'm a "he"?

Assuming you're saying this as a way to effectively double the pool of people your throwaway comes from, adding a bit to the entropy. Adding more writing style sample, and on another topic, probably does more to identify you than the extra bit of entropy reduced.