The extent of the issue is certainly fodder for debate.
But the fact that it's possible and has been done is a proven fact and not debatable. It's not that long ago that a
rider was disqualified for using one of these hidden motors.
The only controversy in this one case was whether the motor was in the bike she rode in competition, or another one that "just happened" to be on her team car.
So, let's not fault 60 minutes too much here, since they're about a year behind the mark anyway.