to add, while the gaiman stuff is exceptionally egregious, and the incidents were 'fast progressing', in most instances there tends to be some form of preparatory/grooming activities - which is what a conduct based system is decently apt at impeding, especially when power dynamics are present
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On the other hand, Gaiman's going to face major fallout because his victim are being listened to.
Social roles protect themselves, not the people assuming them.