Yes, you can think of ecash as an intermediary money protocol layer that can be used to unlink two transaction, say a fiat payment and a BTC withdrawal.
Discussion
Yeah. I like the idea. Hardest part is touching dirty fiat and all the regs that come along with it.
It would be a great privacy feature for someone like nostr:npub1yul83qxn35u607er3m7039t6rddj06qezfagfqlfw4qk5z5slrfqu8ncdu