Nostr has nothing to do with media file hosting and delivery. Just because Nostr's distributed text blobs can contain links to centrally hosted, censorable files with a server admin doesn't make any of that 'part of Nostr'.

Similarly, Nostr is not Lightning and would integrate just as well with PayPal. Just because clients can build profile fields for Lightning URLs doesn't make any of that 'part of Nostr'. jb55 has repeated this so many times.

Oh, that wouldn't be Nostr because it's centralized? So is NostrNests, which isn't part of Nostr and doesn't even authenticate the Nostr way.

Not everything adjacent to Nostr is Nostr, and selling media files for Lightning invoices is entirely doable without Nostr. The Nostr protocol adds nothing to the mix except yet another public record of your transaction on multiple servers, which isn't really a plus, plus you already have that with the blockchain.