Didn't Liberace sue a newspaper for libel when they said he was gay... and then win.
I do not know why anyone gives this guy the time of day. There is a way to indisputably prove if he is satoshi and it is the one thing he will not do.
It is like if I start telling everyone the Lamborghini in the parking lot is mine, and they ask me to turn it on, and I spend the next 4 years arguing that it is mine instead of just turning it on.
Although maybe if I do turn it on I trigger a massive tax bill, in which case I should have never said it was mine in the first place.