Let me be clear, I agree it should not be normal to SSH into a prod box. Our logs are centrally aggregated. But it’s one thing to say it’s not normal, but quite another to say engineers shouldn't have access, because I totally disagree with that.
What normally (should) happens in that unusual case is that the engineer is issued a special short-lifetime credential to do what needs to be done. An audit trail is kept of when and to whom the credential was issued, for what purpose, when it was revoked, etc.
