That's interesting. How would the viewer verify it's the real address of the content creator?
You can't really :( Maybe there is an 'owner' tx cmd which references the post tx hash and an address. Client can surface the most frequent reference, anyone can 'fix' a problem?
If the referenced media is YT, the payment info could be in the YT video description which the memo client finds. Could then reasonably know that the address refers to the uploader.
I like that idea. If there was a reference on the chain to an address that wasn't in the description, or meta data in the case of a magnet you would just surface a warning.