Nostr signers . The copy paste is the weak point , if only human brain can memorise that key . The good way would be generate your seed phrase ( mnemonic) on offline device to prevent any network exposure
I think everyone who hold Bitcoin is real bit-coiners even they are not promoting Bitcoin . A lot of people promoting BTC is broke alias don’t have Bitcoin and they are not real bitcoiners . Real bitcoiners are the one who have Bitcoin and hold . I think .