The scepticism mainly comes from people acting like eating only potatoes for a week would be bad (people do this potato cleanse thing). I don't mean that I'm sceptical of all nutrition but I do think that there's lots of fake nutrition information that doesn't hold up.

I agree that there's so much delicious things to eat that it doesn't make sense to only eat potatoes. I'm only doing it for a month. When I say I'll always eat more potatoes I mean it's my goto lazy food.

I went two weeks without eating anything other then potatoes and a gross tasting multivitamin. Finally I ate half a tiny KitKat and the taste was far better then I remembered. I think eating bland potatoes can help make other food even more pleasurable.