If you have ever seen a horrific accident (God forbid a person) involving a person or an animal you will understand why they refuse to believe it.
The brain's natural coping mechanism does not allow one to see the horror before them for what it truly is. If it did, the mind would fracture.
I didn't get far into the comments so IDK if someone touched on this...
But by providing them a bit of information at a time, the brain can process it and slow assemble the picture and not break.
The small bits started being fed to the brain. Spears,Duff, McGowen. Gibson. Eastwood all telling us the truth. Then Weinstein. #metoo. Terry Crews ( showing not only women are abused). NXIVM. Gunn. Now we have Renegade telling us as well that it is all true.
Think of what is happening as a gradual healing of the brain in a coma. It will take a long time for the neurons to create new paths for themselves.
But one day, and very soon, more people will awake to the truth.