It's highlights the gap between what NFTs are said to be (paying artists, owning artworks), and what they are (get rich quick off other people's content).

In this case authors of the skins aren't getting paid anything. Copyright situation of 80K files found on the Internet is also going to be a mixed bag. It may create a few paradoxes where people who paid for an NFT don't have any legal right to use what the NFT links to.