Even if these weren't a scam, they use intensive computer resources to add a layer of property ownership bullshit on top of an existing open data architecture simply so certain people can claim "ownership" over information. It's a way to push the ideology that we should have "ownership" over the things we post to the internet, rather than it being a memetic collage of humanity.

All knowledge is based on previous knowledge. For knowledge to grow, access to information is important. NFTs is an attempt to make technology move backwards and deny access to information via technological means. I'd personally rather have places like Sci-Hub, which is dedicated to sharing information freely for the benefit of science worldwide.

Worse than just being a rejection of the open nature of data and how easily it can be transferred, it doesn't actually do what it claims to do. One of the people who helped create the NFT spec in a programming jam calls out NFT peddlers by pointing out an NFT doesn't contain any actual art, it only has enough bits to hold the URL to a piece of art. Technically, if the server the hosts your NFT disappears.... so does your NFT. Because the NFT itself is just a hardcoded link to a piece of art that is verified by a series of hash-checks.