It only works better on a global scale and only for certain cases. And if you ignore problems present in the current banking system.
My examples would be:
people traveling (or refugees fleeing) across multiple countries would benefit from some kind of cryptocurrency in that their assets would be easier to access globally. No having to convert their money as they cross borders or dealing with banks and credit.
People living in places with unstable government and financial institutions would maybe benefit from having access to a decentralized global system to store some of their money in a system their government doesn't have a hand in or control over
Cryptocurrency is still a new technology and idea. Centralized banking has existed for thousands of years.
Capitalists did what capitalists do and tried to prematurely scam and squeeze as much money out of the idea as possible. Potentially forever ruining the image and possible impact the tech may have had.
Im pretty salty over what happened with NFTs. There were a lot of exciting things it could have been applied to. But no. It turned into money laundering with ai generated images.
Yes you can change steam to not show your current game in friend lists
Just shows you as online