[mockery]

I didn't read the parent post as using it that way - I believe they're saying that any claim that "supply chain security" (of videos) will combat deep fakes* isn't necessarily a credible model of security considering that the "real" supply chain (of physical goods) isn't apparently particularly secure.

I don't think I actually agree, however. Things like hashing and cryptography make me inclined to believe a digital 'chain of custody' is easier to prove and validate than a physical one.

( *I'd never heard this before, but it's an interesting claim )