My ex is crazy stalker. Sometimes they would get drunk, look through my facebook and linkedin, and send me many nasty messages. Very annoying. Removing my online presence solved this.
> Hey, I have a crazy story. I found this website today. There used to be this person who did this and that. And he’s our grand-grand-grand-father
Imagine your class mates would discover, that your grand-grand-grand father owned slaves and they had pictures...
I think at this point you are solving a wrong problem. Getting root access through X zero days exploits is not so hard. And if you uninstall `sudo` and `su`, and only login as root on dedicated TTY, you have very similar security.
I use Qubes OS for stuff like this. Way better security, no need to juggle tokens, dedicated lans and so on. Only real problem is no graphical acceleration in browser (Google Earth...)