Re: his plan. The article says "that would obviously be practically complicated, but we could ban holding of bitcoins or making transactions in them". In other words random punishment whenever they find someone and hope everyone else falls into line.
Haha, the best part about this is that nobody actually "holds" any Bitcoins. And I don't mean physically either. All you hold is a simple set of numbers and letters that give you the ability to move some numbers around on a global ledger. He is effectively banning strings of characters. I say more power to him, this would be an amusing experiment.