No I'm not, Ty. The dictionary defines capitalism as the private ownership of property. So, no, big C capitalism isn't a Ponzi scheme. But you know this.

If you buy a field, plant barley, and sell it to distillery for whiskey, that's yield-producing. If your factory buys alloys and turns them into cars or washing machines, that's yield-producing.

But if you buy a digital file like a Bitcoin or an NFT, the only hope of profit is to sell it to someone for more than you paid for it. This is mathematically unsustainable, and therefore ultimately harmful to society.