For the sake of simplicity, the author is a mature person, who enjoys writing for the sake of writing, and someone who wants to share their writings with the readers here on this website.
So why say it like that?
Because the writer wants the reader to *read* the stories, not judge the writer. Well, one would suppose that judging the writer is an inevitability- but the writer wants the reader to try and enjoy their stories, simply on the merit of the writing.
Besides, the writer is pretty sure that folks will judge them anyway, and the writer will probably slip up and reveal their gender and other things that tell more about them as a person. Hopefully, though, the readers will enjoy the writing, nonetheless!