Well, if it's sold by the artist or copyright-holder, there's usually an implicit license not to sue if you display it non-commercially. In that respect, NFTs make almost as much sense as character adopts, or commissioning [furry] art in general; plenty seem willing to shell out the cash for that. (Of course, many are of memes, which wouldn't have value if they hadn't been copied…)
Well, if it's sold by the artist or copyright-holder, there's usually an implicit license not to sue if you display it non-commercially. In that respect, NFTs make almost as much sense as character adopts, or commissioning [furry] art in general; plenty seem willing to shell out the cash for that. (Of course, many are of memes, which wouldn't have value if they hadn't been copied…)