JSKitty on Nostr: Can someone ELI5 what #Cashu is to me? Is it just noise? (I.e; custodial trash) Does ...

Can someone ELI5 what #Cashu is to me?

Is it just noise? (I.e; custodial trash)
Does it empower self-sovereignty?
What’s the catch? #asknostr

I’m curious. But my knowledge is somewhat limited to the pre-Lightning era Bitcoin.