Yes, Bitcoin is a ponzi (investment fraud). I collect the Best of Bitcoin is a ponzi articles @ https://openblockchains.github.io/bitcoin-ponzi Learn how the investment fraud works.
I'd love to be corrected on this but as it is every value system humans participate in appear to be very pyramidal.
Yes, you are wrong. The US dollar is not a ponzi. To quote from the Bitcoin is a Ponzi article:
National currencies too fail to fit the definition, because people do not "invest" in them with the expectation of gain. In fact, governments make their currencies slightly inflationary precisely to discourage hoarding.