There's a reason why he remained hidden all this years.
I wonder if that reason is much simpler than many people think. Because they connect it with three-letter-agencies, with anonymity/pseudonymity, privacy, freedom, and other things like that. But the sad true is if you try to run any kind of Open Source project, there is a huge risk to feel bad, and be ashamed of your code. Especially, it is more true in case of blockchain-related development, because then, the whole history becomes really set in stone, and it is not only about being Open Source, but also about having all pieces of the history, to prove that the whole system is "honest". And that history can also contain some shadows, and you can feel bad, when you read your first posts, that are sometimes glorified, even if you currently completely disagree with that content, and you think you were gravenly mistaken.
I'd rather have Satoshi's identity remain a mystery until bitcoin's end times than have it be revealed sooner and cause some media sensationalisation.
Fortunately, all old traces of Satoshi, can become obsolete over time. Which is good, because the longer his identity will remain secret, the more chance there is, that nobody will be able to prove, that he is Satoshi. Because now, you cannot for example prove that you are Satoshi, by logging into this forum. This account is now permanently banned, so that path is totally closed. The same is true for many e-mail accounts. They simply expired, those domains, and accounts, are currently in different hands. Which means, you can no longer write some e-mail, and use the same account, which was used in the whitepaper. It is no longer possible.
And then, if you think about things like the public key from the Genesis Block, it may be broken in the future, when we will do the transition from secp256k1 into something else. Or, the GPG key, used by Satoshi, could be also broken, and then, no scammer will be able to use that method. Or, SHA-256 could be broken, so some signature from Satoshi could no longer be validated. In general, Satoshi used some cryptography, that was available in 2009. Which means, it could be totally obsolete for example in 2099, and then, as always, the history will be written by the winners, and nobody will be able to overwrite it anymore.