The first half of the chapter is a lot worse than the second half. I expected what at this point I'd consider typical for this manga to have a direct comparison and them saying imported rice was garbage while japanese rice was the food of gods, but really it's more about preserving the local industry and know-how, which is a decent argument. The health argument is stupid though, especially when another manga, Natsuko's Sake, is pretty critical of the japanese rice farming industry.