enjoy, first of all, I have made the exact same argument you pose here: The crypto idea (Bitcoin) may well be a creation fostered by the CIA or elite for the purposes of brainwashing the public into accepting the idea of a digital (paperless) currency world. That said, the rise of many other viable cryptos (like Ethereum) are the result of a free market acting on a good idea. And many of the cryptos do indeed allow for anonymous (or PRIVATE) transactions outside of the reach of criminal governments. That's a good thing.

As for the tracking of what sites you visit or what comments you leave, that's been going on for better than ten years. The NSA has a "file" on all of us now.