I'm not sure what you mean by "Those in power" there are lot's of people who know, but recognise that he has chosen anonymity and see no value in putting a name to the person.
It's not so much a secret as it is simply not public.
Not sure what you mean by "not public", given that you can just search it up and find a Reuters article from March giving out his full name and background.
Good. I'm glad most of the media have come to a gentlemen's agreement to not blast his name everywhere. Adds a little more fun to the world. Even this statute is staying for now, the local council, bless them, have decided to leave it in place for the near future.