Earlier quoted context omitted.
I'm not going to argue against some benefits' crypto can have. Especially with the under banked. But it had over a decade to improve society and so far the main use case is: Trick people with tech-bro talk and then scam them.
Bitcoin, specifically, is improving society in many ways, especially in Nigeria, Argentina, the Congo, etc. Even in the West, where our money is more stable and the benefits of it are less obvious, Bitcoin mining offers great benefits to energy grids.
In other news, breaking windows is great for the economy: it makes lots of work for glaziers!