Canada

The article isn't about diets, it's about how difficult it is for small, indigenous businesses to stock larger grocery chains — But diets can vary greatly between different tribes and locations. Remote communities have a hard time getting conventional products, which can be prohibitively expensive due to transportation costs, so a number of people rely on traditional hunting and local foods. Inuit still hunt seals, northern BC is big on the salmon catch, and deer are big in the prairies.

Pemican, salted fish and jams are all shelf-stable, traditional and use natural preservatives. Making products doesn't mean mass-production either, I worked at a small food production business for five years, and our biggest batches were around 40 pieces at a time.

Not to mention that seasonal harvests and hunts were a big part of the hunter gatherer lifestyle, where a whole community would come together to work through a salmon catch, game, and harvests. Mass production was absolutely a traditional part of indigenous life.

They definitely had complicated recipes, too. In just the northern Okanagan tribes, they made a bread from black moss, herbs and fruit. They also whipped up saponin rich berries into a kind of cream mixed with preserves and berries for a dessert, for just a couple examples. Foods of the BC interior first peoples are actually pretty fascinating. Seasonings and involved production methods were widely used as well.

Y'know, that applies for the hunter-gatherers, but I have to wonder if people like the Iroquois had a cuisine before the whole genocide thing happened.