So within 7 years of the start of Bitcoin, pretty much every original Bitcoin developer had become disillusioned, with claims like it was "an experiment" and "has failed"[0]. We're now heading towards 7 years since the start of Ethereum, and it sounds like Vitalik is now too beginning to realise that it has turned into something a lot worse than what it tried to replace, e.g. because it magnifies the most terrible aspects of human nature.

[0] https://blog.plan99.net/the-resolution-of-the-bitcoin-experi...