I'm not sure what specific cases you looked at. Punishing one domestic abuser doesn't have much of an effect on another prospectie domestic abuser, as that sort of criminal activity is driven by psychological disorder more than consciously directed rational behavior. That's not to say there aren't psychotic hackers...
I started messing around with computers as a teenager in the 1970's. Things were very different then. High schools in my area taught computer classes using teletypewriter terminals that connected at 300 baud via audio modem to a PDP 11/70 at the local university. If you were one of those kids who was motivated to figure out how to mess around with the system for amusement, then you'd be recruited by the university to help administer and run the system. The notion of committing a "crime" merely by pushing buttons, writing programs, and fooling around with computers would have really never crossed our minds.
But looking at the kind of damage that "unidentified juvenile" was able to do in one of those cases really drives home what a different world it is now.