The "hot potato claim risk" does not even apply to fiat, why would it apply to Bitcoin?
BTC are not like fiat / paper money where the actual value represented is the contract between the issuer and the bearer of the currency. Bitcoin refer to a point in a blockchain/ledger {ledger entry}
How can someone else be entitled to a ledger entry? {There can only be one ledger entry refering to that value in the blockchain}
They just want to force KYC regulations onto people by implying this.
{If you know all the persons, who owned the coins, you would be able to identify the previous owners, if it was stolen and you, would then have a claim against the new owners for those coins}
From the article: "Under the United States' UCC code (uniform commercial code) as long as bitcoins are treated as general intangibles, no high value investor can be sure that an angry Tony Soprano won't show up one day to claim that the bitcoins they thought they received in a completely unencumbered manner are actually his."
I believe what they're saying is that fiat is classified as money and so therefore, by law nobody can make a claim against your fiat if happened that you had already paid it to somebody else. To clarify further, imagine you sold me your car on paper, but then gave it to somebody else. Well potentially I could go after that car, claim it was mine and the courts might take it away from that third party.
Personally I still think BTC is the honey badger of money and it doesn't give a shit about some bullshit outdated law
Let's imagine this is a problem for BTC, well then I guess everyone will just move over Dash, Shadow, Monero, or whichever alt-coin has the properties to protect them.