The Inuit are not the only northern latitude aboriginal people, you know. There's another that lives in Europe. Here is what they eat.
www.eng.samer.se - Food Being that I'm 50% Swedish and Finnish, I presume that I'm genetically predisposed to a similar diet. (The rest of me is other northern European.) My grandparents knew about these things. My grandmother knew how to cook in an earthen oven in the north woods of Minnesota. My grandfather hunted and fished. I learned how to fish early on in my life. My relatives in Minnesota keep a 5gal bucket of pickled herring next to the sofa. These old ways aren't that far away from some of us.
I think most cultures ate at least a little herbal stuff. Herbs have lots of valuable properties. One of the interesting things in that link above was how the Sami preserved milk using herbs.
The original question was is there a nutritional need for fruits and vegetables. I think you probably could formulate a purely meat diet, but I think it would be greatly enhanced by herbs, including such herbs we consider "greens". And if you ever hike along a trail strewn with huckleberries, cloud berries, thimble berries and others, I just dare you to resist.
Female, 5'3", 48, Starting weight: 163lbs. Current weight: 135.
Starting squat: 45lbs. Current squat: 145 x 4.