My mother was raped by her uncle as a child. She told people. She was informed that she was a liar, a bad person, a fraud. Her relationship with the rest of her family was irreparably and unjustly harmed because she tried to do the right thing.
He raped others. Even after she said something. Everything she went through was for nothing. That stupid bitch should've said something, huh?
The decision a victim has to make is not an easy one and it is not one you get to judge from your Gamer High Chair. You know it's not as simple as "if you had just said something this wouldn't have happened to someone else." Without indisputable evidence of wrongdoing, the victim has to take the huge risk of potentially being ostracized from the very community they're seeking to help and be helped by. Chances are good that they won't be believed, that the community will be split, and the victim is further fucking traumatized.
To speak up is to relive, in great detail, being raped. It is to be questioned and doubted at every turn. It is to have perceived inconsistencies called out and further explanations demanded of you. It is to potentially destroy relationships you have with people you love because they don't believe you. By speaking up, you are placing yourself under more scrutiny than the person you're accusing of fucking rape. And in the end, after all that pain, after all the bullshit and relived trauma, you might simply be discarded as lying trash. You may well have helped nobody, had your reputation tarnished, and the net result is that the victim is only further victimized.
It is not your place to demand these things. Kindly shut the fuck up.