Interesting.
This is just the chat history though, right? If they didn’t promise to store chat history then this wouldn’t have been a problem.
They could’ve done client side encryption and stored these chats in their Nostr relay using nip44. And we could’ve verified that the requests that are going through are correctly decrypted only inside a TEE.
Btw we store chat history on Nostr relays using NIP-PNS.
https://github.com/nostr-protocol/nips/pull/1893