Earlier quoted context omitted.
Cryptocurrency is not that, because it is not anonymous nor is it a cash replacement. I have sympathy for those folks who were led to believe those things, it's not their fault.
Small correction: some cryptos are anonymous, Zcash and monero for example. Bitcoin and ether are not, and once those have been rolled into something like the Winklevoss's Gemini, it is harder to follow them publicly.
Also I would like to point out that the idea you can ever be fully anonymous on the internet is a lot of bunk. Regardless of what kind of cryptography you use or how many obfuscation layers you put things through you're still generating a great deal of identifying data just by accessing other servers. This is a problem I have with most of the marketing behind any privacy technology, it's not just these privacycoins that are making false promises.