Yeah, I tend to think of NFTs purely as receipts - for themselves. What it’s actually linked to is functionally irrelevant. (Which makes the whole “non-fungible” aspect a joke.)
Which is pretty much the case for most of the uses for NFTs. Like the online games using them - they already require accounts, and the blockchain doesn’t eliminate the need for them, so all you’re doing is adding another step (or three) to something that works perfectly fine without NFTs in the first place.