I think placing the value of baseball cards on the fact that they are made out of cardboard is mostly trying to rationalize a preconceived notion that baseball cards make sense whereas NFTs don't. But even then, similar dynamics to the one you mention also apply in the NFT world: people lose the keys to their wallets. In that sense, the NFT completely degraded. This will probably happen to many NFTs as has happened to a significant amount of bitcoins.