You can certainly see baseball cards (or stamps, Magics cards, whatever) as worthless. The difference being that when you buy a baseball card, (yes a reproducible good, so its value is anybody's guess), you're not buying a link to a baseball card powered by Ethereum, you're buying a tangible product at the very least.
To me the NFT is so intangible as a product that clearly its market is already set to die, the question is who will be holding the bag and who will make millions.
For stocks most people prefer owning an intangible version of it. Very few people want an actual certificate saying they own it.
The value of my baseball card might fluctuate but at least it's existence doesn't depend on the availability of servers outside my control.
and not a lot of other current uses for NFT*
NFT's themselves are actually a really neat piece of technology imo. I can imagine some uses for them. My imagination hasn't stumbled onto how those uses produce appreciating assets, though.
I would be more inclined to call it a scam if the technology was a failure or the purported scarcity of the asset being sold was being misrepresented. Neither of those are true. Instead, what is being traded are extremely scarce assets for which the demand is unimaginably overestimated. In 10 years will anybody actually care that there's a signed entry in a particular blockchain saying that this asset belongs to you? Probably not. I think if technologies like video games hook into a blockchain and let the owners of an NFT artwork for example use it as a character skin or put it up in their virtual house as a painting, maybe they'll have some value amongst people...but the demand is still probably extremely overrated. I'm guessing the value of something like that would be more on the order of <$100.
TL;DR I don't think scam is the right word. I don't think Beanie Babies or IPOs are scams just because people severely overestimated the future demand for the thing that they're buying.
That's just stupidity on the part of the buyer IMO, not really a scam.
An NFT is more akin to a baseball card - it’s value might go up, but that would just be because someone wants to buy it. It’s not producing any income on its own and the owner is no right to recoup the money they paid for it.