Satoshi may make bitcoin famous all over the world.
If we'd know who he is, TV news would talk and talk about it, people would get interested in crypto topics and maybe become new investors ----> BTC GROWS UP!
Yes no one knows who was he and where he was from, we are only known his name but not him, it is not good to reveal his privacy because if people will know him they will take advantage. So till now his identity is anonymous and the same way he kept the bitcoin anonymous that no one can know about your bitcoin that how much you have in your wallet.
His name will stay a secret forever, maybe, and it is good for crypto traders and investors. Let us say, now, everyone learns who Satoshi is. At least half of the interest to Bitcoin can be lost. And no one needs it.