"It's already broken, you can't break it any more" are words to live by.
Or of someone misdiagnosing a trivial problem like a blown fuse and breaking parts while disassembling an appliance which is completely fine.
I feel like kid playing with old appliance (or PC) in the garage is a cliche hacker origin story. I know it is mine.
Also people didn't depend that much on computers. How much would you really destroy at the time by wiping everything? How much damage would that do on a family computer these days?