No but that’s the point. If there’s a copy of the private key out there, then it can be copied. The whole point is that the jedberg-laptop-1 key only ever exists as jedberg-laptop-1. When that laptop gets lost/stolen/destroyed/aged out, there's 100% certainty that it can't be recreated. The other side of that equation is that you need a tree of keys and a whole IT department to manage them so you don't get locked out of your servers. This particular bit of software is about ssh keys and exists within a larger conversation about PKI which you know more about than I, but operationally, you have this, and then you have a root login private key file locked with Shamir secret sharing (ssss on debian) that you distribute to a very select few number of key bearers. And then don't all get on the same plane together, ever.