Some established, legitimate artists have been selling NFTs with their originals. But sure, overall, like crypto in general, the field is filled with scammers and get-rich-quick schemes.
I know someone who is a painter who for some reason decided to try selling NFTs a couple of months ago (I pointed out it was a bit late…). The only responses on opensea and Instagram she received were from scammers, trying to pull a “my payment didn’t work, you need to manually approve it” scheme to try to steal her credentials.