Link is time-stamped with the discussion in question. (To be clear, he doesn’t explicitly mention Beacon, but describes a system just like it, but where the remote signer is replaced with a ColdCard for the key management).
Discussion
Can possibly build off this: https://github.com/Coldcard/ckbunker
Yeah I got there now. AI chat + Wallet = Beacon 😉
Although it's not really built with on chain in mind, but would be possible.