I certainly agree with your general point, but it is very much my experience that just forcing public key authentication on ssh is good enough on its own. (Yes,

I certainly agree with your general point, but it is very much my experience that just forcing public key authentication on ssh is good enough on its own. (Yes, I understand that by writing this on the internet, I have doomed us all to dealing with a sev zero openssh sshd RCE on the weekend. Sorry in advance.)