Can you leave with your nostr identity? No Can you use different lightning wallet? No It's designed to keep you on their app. Don't hold your breath for NWC. No clue what you're talking about with "it's just a replacement for QR codes"... That's a huge oversimplification
not following you sorry. It’s a lightning wallet, I can use it to pay for things with bitcoin, same as any other custodial wallet, like alby… But with nwc I could connect the wallet to the app instead of scanning a qr code every time to pay for things. I don’t need to be able to export my nostr account for this, it has nothing to do with that. And yes I can use any other lightning wallet i choose