I'm trying to find it what's accurate, or maybe I'm just trying to make this guy be wrong so I can hold onto my view of the world and society.
You started with "they can't be serious". Sounds like you already figured it's wrong. I'm sure you're right. Move on.
It was the concept of children being "poison containers" for their parents. In other words parents take out their past grief on their kids. That society says such things is ok and encourages it (which isn't true, I have never heard anyone say that). That parents should be that for their kids and take their frustration and anger but not respond with the same.