"Step right up, step right up, ladies and gentlemen, see a genuine Satoshi coin MOVE before your very eyes! Yes, Craig Wright the Marvelous will MOVE one of the TRUE Satoshi coins! A sight never before seen, never to be seen again! Step right up, only a tuppence to see the great Craig Wright..."

If he was satoshi he would just sign a message with the genesis block's private key saying so. He wouldn't announce that he's going to move an early coin on the bbc. It's simultaneously the most convincing proof and the easiest proof to do.

In my eyes, he's a fraud until he does it.

I agree. It's very hard for me to believe that he can both have been so clearly well-versed in crypto and with its beauty, enough to create a masterpiece like bitcoin, and at the same time hesitate to just sign a message. Not only is signing something convincing and easy, it's taking advantage of that same beauty of crypto that he should appreciate so much.

It seems backwards to me that someone like Satoshi who obviously does value privacy and anonymity would get on BBC and declare "I am Satoshi, and I want to be left alone" and yet at the same time not take the cleanest, least extravagant option of just signing something.

Why though? What does he gain from all this? (I agree it's all a total scam)

All will be revealed in due time