I hate cold water so don't drink enough, but 4-5 litres a day sounds excessive. Is he aware there is such a thing as too much water, and it can have a detrimental effect?
Yeah, filming the kids not enjoying their brekkie was a low point. He's trained them to say they like it but their faces and expressions say otherwise. No different than old days when you were forced to sit at table until you'd finished. Didn't make kids love the food anymore than just letting it go did.