Someone posted a link yesterday to an NFT they "own". I saved it to my computer, changed the file name, and uploaded it to a server. They had and have zero agency to stop me from doing so. Their NFT "purchase" didn't transfer any copyrights to them recognized by any entity with means to enforce copyrights. I can do whatever I want with those bytes I downloaded and the owner can't do a damned thing to me.
So what "ownership" do they have? They don't control redistribution. They don't physically possess a thing. They can't assert some sort of exclusionary control over who gets to see a thing.
Some record in a slow expensive database just says a wallet to which they have the private key transferred Geoffrey dollars to another wallet for the contents pointed to by an IPFS identifier. That's one of the more complicated ways I've seen to throw money away but it's not ownership.