That's basically the concept of air gap in the Bitcoin community. I'm considering the use case for nostr:nprofile1qqszfrv3m6acxyqy4ghuega2n74rntkrfg9sp4pmse94vul56gnul8cpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhs33xu96 where you can have an offline signer device broadcasting notes to another connected to the internet