hodlbod on Nostr: Yes, but there are two differences: - Those entities are often provided by the user ...

Yes, but there are two differences:

- Those entities are often provided by the user directly, and are therefore meaningful to users. Clients are imitating natural end-user actions by generating them.
- Entities are references (links, npubs), or content that has no reference (cashu tokens, invoices). b64 images are content that can otherwise be included by reference.

In other words, I've never seen a user paste a base64 encoded image into a note instead of uploading it to a host and referencing it.