I'm involuntarily off-grid again, so apologies for the brevity...

This flips the nostr pairing scheme on its head vs NWC and adds a new user property, so that you simply provide a lightning addresses and approve (or deny) the request in your wallet

(The wallet has nostr keys for communication, you don't have to yourself in the social sense, or even know about it)

NIP-69 you can think of like nostr-native bolt12 or lnurl-p, and NIP-68 is the reverse to complete the flow.

There's more detailed justification in the respective NIPs and conversations, but here's a video clip: https://github.com/nostr-protocol/nips/pull/1529#issuecomment-2400364120