No one knows it's even a HIM , the mane could be an Acronym. For me I do not believe this was created by one person, I believe that's a name of a TEAM.
why would he / she / they come out, the whole reason they created bitcoin was to be anonymous, may be for good purpose, may be for bad purpose, however it's now being used for both.
There is no reason for them to come out, only to take advantage of the amazing investment method / payment method they created, and I am pretty sure they are absolutely doing it.
In my opinion the greatest evidence that tells me the satoshi was a single person and not a team is that his identity is still a secret, it is very difficult to keep a secret when there are many people involved, someone will always talk and will reveal the secret, and that has not happened, his identity is still a secret which means that most likely the only one that knows the secret is himself in that is why he can keep it that way.