Yes, still requires a custodian, but I think nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg has pointed out in the past that the other big problem with ecash was always that there was no agreed upon unit of account. Bitcoin solves that so that we can have private custodial ecash denominated in a unit that all parties can agree on.