Applying IRL scarcity to digital works was never going to work because of hos easy it is to duplicate that work. An NFT of an artwork is in reality a URL link to a hosted webpage and a copy of a JPEG. You 'own' that URL and can sell it to others but should the website become unuseable in future that link is worth nothing.

The whole idea of NFT's for artwork was posited by internet conmen looking to build a ponzi scheme where the way to make money was to find a bigger idiot to pay more than you did for something that doesn't exist.

Honestly artists would have been better putting their work on a USB drive and selling that.