It's quite bold of the WTS to emphasise this quote:
People didn't have the body of knowledge 18 or 20 years ago to say that this is something that will harm your child emotionally, if you don't address it. Parents didn't know the seriousness ... and the long-term effects.
... when their own amagazine Awake! 6/22 1982 says on p. 8 (about child pornography):
But the children used in it are harmed
And on p. 10:
Incest is probably the most selfish and reprehensible kind of child abuse. It is a grotesque violation of the child's trust and dependency. It is the child's closest protector that is turning on it. And the child is a damaged victim.