Earlier quoted context omitted.
All of those are crimes and easily trackable. If you want to make it life sentence be my guest.
If crimes were easily trackable and prosecutable , we probably wouldn't have such a hard time keeping criminals in jail. We still have crimes committed in jail that don't get properly solved, much less sentenced. Also, this isn't necessarily about dumb kids being busted for drugs or stealing, but organized crime members. The possibility of them ordering hits from inside prison walls or tracking down people in witness…
But most prisons are filled with dumb kids busted for drugs or stealing, and I see no reason why we should make them even more miserable... I'd rather have them keep their connections in the outside world, so they have more of a chance to get back on their feet once they are released.
(Also, I'm pretty sure an prisoner browsing Facebook all day makes a lot less trouble than one who has nothing to do all day...)