Every time I see one of these articles about "unmasking" Nakamoto, I always wonder the same thing: why? I don't really see a compelling reason to unmask this person. Surely there are other more important things a journalist can spend their time looking into. It's the same with Banksy: why?

I agree about Banksy. But in this case Satoshi controls a huge about of bitcoin. If, whoever they are, they did something with it, it would absolutely move markets.