~snip~
Discovering Satoshi's identity could potentially be a problem for the crypto ecosystem because it would mean that, if alive, there is a person (or a group) owning a huge amount of bitcoins that could potentially kill its value even though it would be extremely stupid to sell such huge amount all together. For me one of the most important things about bitcoin is of course its decentralization, and knowing that someone still alive owns 1 mln coins would be a huge problem, I don't think I would trust the system anymore.
Back in the day anyone could simply CPU mine and get 50 BTC at every block.
It was common to have thousands of Bitcoins. They were worthless basically.
I don't think it would change anything if you know that a single person has a million BTC. In the world there are people with massive amounts of wealth and the world continues to operate normally.