If you have the artist's address you can always check that the NFT originated from them. I don't even understand why anyone (mostly non-crypto people) would think it prevents copy pasting.
To be fair, they do actually have some, but all of those can be better served without a blockchain, which as implemented doesn't even help with decentralization, let alone other claimed things.
Well, unless you count market speculation - that's what NFTs currently excel at.