Palladium is a genuinely useful material, and has significant industrial uses. If it gets expensive, that's just markets. If it gets too expensive, alternatives will be researched and hopefully developed. And that is fine.
Crypto fraudsters are trying to tell us that their coin is legitimately useful for ... something, while it is actually an entertainment product. In my view, Doge is one of the few legit crypto coins because it was initially marketed as entertainment. People would donate Doge to each other for fun. Some of the file storage coins may also be legitimate, because you spend those on distributed storage, which is an actually useful service.
But the majority of crypto coins and NFTs are marketed as something useful or a legitimate investment, when they are not.
I guess maybe the argument is you can do something with metals or video games or pokemon cards. But it's hard to believe that a special Charizard has a utility permitting million dollar valuations.