Incorrect. You had to transmit your public key to the sender who sent you BTC.
This guy claims a deep technical understanding and argues why Bitcoin is doomed to fail and yet demonstartes his total ignorance by clearly not understanding the basics of Bitcoin... What a muppet... Ignored.
There are many things that will need to be settled in court before any cases can be finalised.
among other things..
Is Bitcoin property? Under English law I doubt it, therefore it cant even be stolen, just like you cant steal (Theft Act) electricity.
What jursidiction is relevant? The blockchain is everywhere, and you cant be sure where a transaction was made.
Bitcoin may only be psuedo anonymous, but law requires beyond reasonable doubt, which is a significant burden of proof, so proof of ownsership may be mostly impossible once coin has been moved from an address linked to a KYC check.
Its all a serious minefield for the lawyers (though im sure they'll love that)
Bitcoin specific convictions are a long way off, and a good defense lawyer will run rings around any prosecutions.