“Greatest fool” description relies on the precept of its utility or demand returning to zero in a near-future timeframe. If people have utility for “the thing”, that won’t be the case.
There is no utility really, for ponzicoins. You can’t make anything from it. You can use it to make anything. You can’t eat it. You can’t hydrate with it. And you can’t use the notes to summon military aid.
I suppose you can buy drugs with it. Maybe.
So yes, it’s a Greatest Fool game.
Yes, for the limited subset of ERC20s or whatever you describe as “ponzicoins”. Things that actually do nothing, particular not doing anything more than L1 cryptos but “this is yet another token”, are not really adding any value. But I would be really surprised if you can name any more complex contracts than ERC20s (or ERC721s), which is where the work in the space actually goes.
