But if you own a photograph, you at least own a physical photograph. And if you own a certificate that allows you to get that photograph reprinted, then you own a license that affords you certain rights in association with the IP embodied in the photograph.
An NFT doesn’t offer you anything other than the NFT. If it’s got a JPG embedded in it, you can have that JPG without an NFT attached and still have the JPG. It doesn’t offer you any legal ownership or licensure of anything, other than (perhaps) the implicit licensure of the included image that goes along with the NFT, if it was issued by the copyright holder of the image (*). And what is a license to use a JPG worth? And to the extent that an artist can license the JPG, what does transferring licensure via NFT get them that a plain old contract doesn’t?
The only benefit I can find for anyone is the chance to scam a sucker out of their money for a JPG. Oh, and to burn the earth.
(*) IANAL; IP lawyers feel free to shut me down here.