Earlier quoted context omitted.
> How can a vegan diet be more balanced? It lacks diversity which as far as I understand is the primary foundation for good healthy diet. How does it lack diversity? There's far, far more non-animal foodstuffs in the world than types of meat/fish... Also, most traditional and 'varied' diets contain far more vegetable matter than meat anyway.
Yes, and all those non-animal foodstuffs are available also to normal people, in addition to additional foodstuffs which come from animals. Vegan diet is less diverse by definition, as they merely limit themselves, they do not eat anything non-vegans can't. Simple maths.
What omnivores can consume is different from what they do consume.