On the other hand, I do want to respect their wish to stay anonymous.
Whomever that person is, it must feel very weird. They either still have access to the private keys and are, on paper at least, in the top 10 richest people in the world. Or they no longer have access to the keys and must feel some form of "loss".
Or it was never a person and always an organisation. So many unknowns :-)
There must have been countless investigations into this. Journalists, governments, shady organisations. It's hard to imagine no-one has uncovered Satoshi yet.