Bitcoin is not a Ponzi scheme because IF it successfully achieves a certain level of adoption or usage it WILL have some intrinsic value. The current value can be seen as a view of the average expected future value. A risky bet/investment is not the same as a Ponzi scheme, even if _some_ people are talking it up like scammers.

The fact that YOU do not believe that future will happen doesn't make it a Ponzi, just a bad investment in your eyes. And yes, some people talking up their book and trying to manipulate it's price — a pump and dump — is still a scam on their part, but it doesn't make the underlying asset a Ponzi scheme.

At a bare minimum there are some fringe use cases (no matter how unsavoury - dark web, ransomware, etc.), so I'd argue that barring a major security flaw, even if bitcoin was banned everywhere, the floor price would be >0. (I am considerably more optimistic for long term use cases, but we're just talking about whether it's a Ponzi or not here, which doesn't require any extra optimism.)

I honestly don't know if BTC will end up above the current price in 2, 5, 10, 50 years time, but I do still think it's incredibly cool that we were able to create something with a demonstrable non-zero value and no centralised control.

The challenge now is to keep iterating the ideas, make new weird and wonderful things, throw them all at the wall, and see if anything sticks. Luckily plenty of people seem as excited about that research and exploration for the sake of it as me, so I think we're going to get to find out :)