Any model with a big enough prompt can and will drift. The model in question was a highly persistent one which means even more opportunity to drift off the normal path, and this really showed in unanswerable questions.
We can all believe that models do things unreliably all the time, but when that lack of reliability turns into hacking it suddenly can't be true?
Either way ... YOUR CAT STEPPING ON THE ENTER KEY IS NOT HACKING ... and neither are these scenarios.
They are devs acting irresponsibly and then pretending to be surprised by what they should have expected to happen (just like you should have expected that your "rm *" could have an ENTER key press occur after it).