well, because NFTs are not regulated, thats the thing. yes theres the problem with the servers and the power usage but the biggest thing that scares me about NFTs is the lack of regulation.
People's youtube channels got minted without permission and same with indie music albums. recently there has been a site passing itself off as a webcomic site interested in hosting your comic. nope, its a scam site that will mint your comic and then try to get it taken off other platforms. sure you get a cut of the money.... 10% and the comic is nolonger yours either.
thats the biggest thing to a creator's eyes that makes NFTs terrifying. the fact you could lose your stuff to a cryptoscum at any moment and you better hope the minting site will actually remove it by your request (cause some do which is nice)