Cashu is just banking. There's nothing novel about it. Just paper receipts for hard assets and all the games that come along with it.
Discussion
The first sentence is true.
Make Banking Great Again.
It is novel because it is internet native. The mint operator doesn't know who you are and you can do really cool things with it. All these aren't possible with regular banking as we currently know it. Also no néed to ask for permission or KYC.