I’m pretty sure the analogy would be that Picasso himself actually issued the NFT. Anyone can “argue” that Picasso issued an NFT, but that’s just like arguing that your extremely skillful forgery is a Picasso original. What’s important is if it actually is an original.
So, a more apt analogy would be Picasso donating a painting to a museum, but trying to sell you a certificate saying that you own the artwork, but you're unable to move it to your private collection or gain any additional access than the general public.
That seems like a pretty raw deal to me.
So with NFTs, its the same, anyone can write a document that says "this certifies ownership of a picasso painting" and it doesn't mean much of anything. However if Picasso writes up a document broadcasts somehow he has done so and the document says you own x painting, then its easy enough to certify to anyone that you own a Picasso from the man himself. The story is not arbitrary, this is precisely why it has value. The arbitrary easily copied stuff is cheap and meaningless and known as such. The "rare" NFTs and stuff selling for massive prices is expensive because it is genuinely so. You can write a comment here about how easily you can create a counterfeit NFT, but how easily can you actually convince someone to buy it from you? You can observe that baseball cards are just pieces of cardboard but how easily can you acquire a card printed when batter X was a rookie?
I'm not saying this sort of value is easily quantifiable, but it is easily observable, identifiable that its reflective of a real element of reality and not (entirely) arbitrarily imagined.
Just smells like laundering to me
We could mint an infinite number of Picasso NFTs, though. None of them are the actual piece of art.
You could argue that one particular NFT is the official Picasso NFT because it was sold by the owners of the Picasso painting, but it’s still just a fancy hyperlink to a page that says “This is a Picasso NFT”.
NFTs are basically fancy blockchain transactions with a memo field that can say “This represents a Picasso painting” and we’re all supposed to believe that it means something.
The closest equivalent would be something like baseball cards. There is a market for baseball trading cards, but everyone is fully aware that they’re still just arbitrary prices of printed cardboard.