These are mostly myths, at best they are ignored, at worst, they perpetuate the assumption half the population in Asia would be nourishing themselves badly (since many thousands of years - seems a bit far-fetched, no?).

https://doctor.ndtv.com/living-healthy/8-myths-about-rice-yo...

Myth or not, ask people which have birds like Budgerigars, or watch it for your self. When you give them mixed food, they always go for the hemp seeds first, even by picking through maybe an ounce of corns/seeds until they get to the few hemp ones. Why is that?

Addict might go for heroine?

Kid might go for Sugary drink or cereals or snack over something like broccoli

What does it prove?

People in south Asia atleast don't consume Rice alone, rice has handful of amino acids when it's coupled with lentils (of different kinds) which have other complementary amino acid profile it becomes a complete protein like any other protein from whey

This is often smth which Indian people say, "bro our diet lacks protein". Yea what you consume everyday as "Dal bhaat rotti" if if it's protein then what it is?

Addict might go for heroine? wasn't what i meant to imply, nor does it fit the profile of the hemp seeds in birdseed since they come from the sort hemp which doesn't make you high.

More something like it's healthy and they know it. By whatever means...