The doxxing by Wallet of Satoshi of NPUBs from NOSTR users must be completely solved on my new client. As I said, your keys will be always yours, just as a Bitcoin wallet, you will have self-custody of your ZAP keys (and also from your wallet as there will be integration with Blue Wallet Lightning).
The ecosystem will follow two central keys: full privacy of your metadata and full personalization of your feed, also with private metadata, nor us, nor NOSTR will have any relevant data of your NPUBs or NSECs. This underprotocol will be the safest, the most private, and also the coolest NOSTR client on your App Store/Google Play! Watch out for any updates on Eclipse client.