NFT's were ALWAYS worthless. just like Crypto Currency.
IMO, it depends on exactly what the NFT is granting. If it's used to represent a complete transferal of all rights associated with the Intellectual Property, and is merely using blockchain as a means to mediate the contract, then your statement is akin to saying that IP is worthless, which is clearly not true in at least some cases.
The thing is, I'm not sure how many NFTs include a full transfer of rights to the IP. I think, in too many cases, the originator retained some? That would potentially transform it into a glorified digital "print" of an artwork, and would indeed dilute its value quite considerably.
Anyway, the difference between crypto and NFTs is that crypto uses blockchain to create a currency system, where value is a fluid and arbitrary concept. NFTs use blockchain to manage an IP asset, which you should be able to assess a value for, completely independent of how ownership is established.
FWIW, I never owned any NFTs. I never bought into the hype, but I also think many of the nay-sayers might be too full of themselves, after the crash.