Wait so the dad was abused as a kid or what?

No. His dad abused him when he was a kid.

Yes i know that. But didn’t it show a flashback as the dad, which was also being abused.

it probably just shows that the father was hit as a child which made him think later when he had children that it was better to just put them in a box (idk how thats really better tho like...) and that was him trying to justify it. hes still a pos tho