more concern is being shown for the molester than the victims
Yes. That just breaks my heart.
Apparently, the parents didn't give a flying fuck about the young girls who were sexually abused. It was far more important for the Duggars to obtain fame and fortune than to protect their own daughters.
This is truly disgusting.
Statistik: is there evidence that the parents tolerated the behaviour?
They spoke with their son, and when his behaviour persisted, they disciplined him, forgave him, and reconciled him to his sisters ten years ago. Beyond that, there's no evidence the problem persisted. All of this happened well before they were famous.
On what basis are you claiming they didn't care about their daughters?