> ssh-copy-id This section starts out talking about how the command uploads your public key then seamlessly switches to saying it uploads your private key (whi

> ssh-copy-id This section starts out talking about how the command uploads your public key then seamlessly switches to saying it uploads your private key (which I am guessing are typos). Also that command does not just upload the key, it appends it to ~/.ssh/authorized_keys which is considerably more useful. Finally, in the ssh-keygen section, ed25519 is from everything I’ve read preferred these days to ecdsa.