Can we just clear something up…
By definition of a Ponzi scheme, Bitcoin can’t be a Ponzi scheme?
Discussion
It’s money with no counterparty risk. So no. It’s not a ponzi.
It's not a ponzi scheme but it could be a Greater Fool Theory situation.
But then again most, if not all currencies are in someway.
And the same Ponzi schemes don’t keep reemerging every 4 years, they are definitionally off and this ignorance is why they rationalize not participating in #bitcoin
There's also no promises in Bitcoin, compared to a Ponzi