Aside from being tone deaf, I think this is bad advice. Common breakfast foods are fairly cheap comparatively and I'm pretty sure most nutritionists recommend eating something for breakfast to kickstart your metabolism. If I were skipping/reducing a meal, it would be lunch.
It's basically your liver (and kidneys) pushing glucose into your bloodstream when you wake up. It's common across nearly all animals. It seems like if your body gets used to not having food first thing, the morning response becomes stronger, and your body takes longer to shift to glucolysis. Which might explain the nausea part if you aren't used to eating first thing.
I stopped eating breakfast when I left home, so I'm pretty locked in to 2 or even 1 meal a day since I can't be arsed to waste time eating at lunchtime most days anyway. I make up for it with coffee.
I only eat one real meal a day and supplement with light snacks and plenty of fluids. As long as that one meal is something of substance and not say, a ramen packet or something like that, I feel pretty good. There are people that do one meal a day with no other food intake at all, too, but that's a bit low for me.