I've been a nanny for over 25 years now. I used to look up to Jo Frost, and I would despair at some of the parents on her show.
Now I know how TV works, I'm a little less shocked but this link shows a family that I remember watching. I think I cringed all the way through but this explains so much.
https://vm.tiktok.com/ZGeoTgp2U/
Firstly, the producers used to tell the kids that if they weren't really really badly behaved then they wouldn't get to be on TV..