Or worse... there are exceptions such as CryptoPunks, but in most cases buying an NFT artwork isn't actually buying the artwork itself, even for digital art (i.e. not stored on the blockchain; because it doesn't have the capacity for large images) instead you get ownership of a link to the image on a server somewhere. Does that make any sense? It's easy to argue that it doesn't, since usually anyone can visit the link and copy the artwork, the link can rot and some NFTs don't confer ownership of the digital art itself (as also tends to be the case with NFTs of physical artworks) or even usage and exploitation rights for the artwork.
Steve Mould has made this video in which he seems sympathetic to the view that the value of NTFs might be somewhat justified as a means of supporting artists, despite their technical limitations:
Ubisoft tried selling NFTs of identical items for the video game Ghost Recon Breakpoint; which was a complete failure. Here's a good video about that:
Many of the NFTs featured in news stories on a weekly or daily basis are collections of "profile picture" art that are generated in their thousands with multiple defined variations; often using randomisation algorithms that provide little or no artistic merit. The quantity available in a collection is typically limited by code and "burning" any unsold allocation. The pictures that are fortunate enough to be "minted" with rarer traits can attract higher values. Some of these collections such as the Bored Ape Yacht Club have become high profile and change hands for silly money (or make headlines when they're stolen, such as happened to Seth Green amongst others); whilst many others lose money for their "investors" or are blatant scams. In many cases NFT collections have launched promising to provide real-world benefits that will never be delivered. There are countless examples of "rug pulls" in which the organisers or promoters quickly sell their holdings, crash the price and escape with large profits - usually with very little chance of ever being held meaningfully accountable for their involvement.