Unless msec is right in suggesting the system will treat this as "nobody". It wouldn't be good from a security viewpoint to have the top of the tree owned by such an unprivileged user.
However, I suspect the msec message is wrong and this lost node really is unowned rather than belonging to nobody. Nobody isn't just anybody, you know.
Of course, if you ever create a third normal user, they will be able to delete and replace major parts of the system tree, since ownership of / enables them to delete and create /etc, /bin, /boot (where the kernel lives) and so on. That could cause you more fun than you bargain for.