Here's a bruising takedown of the whole concept of cryptocurrencies by an economist called #NathanJRobinson. It goes quite a bit deeper into the economic practicalities than some of the other critiques I've read:
There's a bit too much hyperbole in this one. There's some bright sparks like highlighting how #WarrenBuffet isn't a good person, but he contradicts himself by taking Buffet's advice (just one example).
A lot of arguments are 2014-ly, or not based on things bitcoiners actually say or do.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!