The difference between a double leg and a reaping heel hook is that the heel hook is a dangerous move with a small tapping window that could cause extreme injury and a double leg is a move that judoka have failed to address an adequate defense to.
Seriously, they put the "rules" into play to stop wrestlers from winning judo matches. Same thing with banning straight pulling guard because many judo black belts will get schooled by BJJ blue belts on the ground because it is entering newaza without attempting a throw.
I understand that judo is primarily about throws, but ground fighting is part of it, whether by submission or pin, and I can't understand the logic of banning moves that do not overly endanger safety just to save face for your art so it is not overtaken by more skilled opponents. At that point your art, or at least the legitimacy of the competition, has lost face.
