In what way is it bad advice? To me it makes complete sense. Much of the time when we feel "hunger" we are really just thirsty, so taking a sip of water can be

In what way is it bad advice? To me it makes complete sense. Much of the time when we feel "hunger" we are really just thirsty, so taking a sip of water can be all it takes to satisfy a craving, and stave off snacking. Likewise fruit and nuts are much more healthy than junkfood. So if eating fruit or nuts prevents him from eating junkfood then it is a benefit.