Yeah, it's almost like people keep silent because of the power imbalance that leads to the abuse and blaming the weak because they aren't able to stand up to the strong is the wrong thing to do.

They could stand up to the strong, but they choose to go along with it for their own personal reasons (ie, make it in Hollywood or become an Olympic athlete). However even after those things happen the abused continue to keep silent.

Aside from the other comments here, another thing to consider is that it's usually incredibly painful to relive abusive treatment, let alone potentially having to endure the humiliation of having it dragged out into the public, where a million and one disinterested onlookers will potentially pull the victim apart and blame them for what happened. Unless you've been in such a situation yourself, you can't imagine what it's like.

who is going to listen to you if you stand up to the strong? unless you have support of anyone in the media (who would also be willing to put their reputation on the line) your message isn't going to go anywhere. not to mention, you think things like 'black cube' suddenly don't exist any more?

It also didn't help that he was a doctor who taught his methods in medical classes and was regarded as a forerunner in the field of sports medicine, especially around gymnastics.

Very few people would've been able to call him out on it because no one had enough experience to call him out on his BS. The only reason he got caught was because he got bold and took it too far.