To be more clear, yield comes from counterparty risk. If it’s just *risk*, then everything has risk. Generating and storing private keys to UTXOs in cold storage has risk (and liquidity and other costs), but we wouldn’t say Bitcoin’s appreciation in cold storage is yield.

Yes, we could then debate the semantics of counterparty risk with the other side of your channel, but if the technical risk of mismanaging your channel and losing funds to a force close counts as risk to justify the classification of any return as yield, then the technical risk of managing cold storage private keys or even setting up your own self custodial time lock contract could also be seen as risk that offers yield.