Token do have use case, obviously. Like, we can see countless usecases with our own eyes. Tokens don't have any legal and at the same time competitive use case, that was the argument. All of those castle in sky constructs about how there would be property deeds on blockchain (technically and legally impossible), how there there would be game assets on blockchain (also technically impossible plus no game studio would ever be interested), how ticket scalpers would solved on blockchain (technically possible, but no ticket vendor is interested because they are the ones who benefit from scalpers) etc. And the list goes on. All of those legal use cases were a dud, because it is simply a shitty technology.
But to reiterate, there is great and massive actual use case for the tokens, yes. No one would argue against it :) . We just think that it is bad.