[akl]

I think you're misunderstanding - GNU/Linux is a multi-user OS regardless of if it is run in a kvm/xen/etc container or on bare metal.

Even if only one person (or no persons) ever log in, the machine is capable of running processes under multiple users and it is best practice to maintain this so that all users do not share the same level of privilege.

[cdcarter]

Yes, but he's noting that a younger engineer may have never encountered a system with multiple users, so wouldn't think that being able to open a privileged port is more terrifying than being able to spin up netcat on 10032.