Earlier quoted context omitted.
Eh. Words are going to word. People conflate ponzi schemes and pyramid schemes as well. However, I'm having trouble finding where it is not. Money paid out must come from new investors. If I buy crypto for $1, I need someone willing to buy it for $2 to make money. My returns come not from any utility, but from more people investing in it.
If I buy a baseball card for $1, I need someone to buy it for $2 to make money. If I trade lumber on a commodities market, I need someone to buy it at a higher price to make money. The new entrants condition does not qualify anything as ponzi scheme. Words should have meaning, or else what are we even talking about? A ponzi is a specific form of fraud where the promoter misrepresents where the profits are coming from…
Your lumber comparison is vastly over-simplifying an issue to make it look similar. Lumber is useful. It has value as a building material.
I've yet to see a cryptocurrency/NFT/whatever that has any value outside of its own ecosystem. I also like how you say the "new entrants condition does not qualify anything as a ponzi scheme" before pasting the definition which says "the promoter pays out current investors with the money of new investors".
Which is how crypto works. That's the only source of increased value, new investors. The only quibble is that there's not a single promoter. In which case, fine. Crypto is not a ponzi scheme. Crypto is a vehicle by which people can easily create a whole bunch of ponzi schemes.