I don't 100% agree with some of Audette's allegations (cashews and vinegar seem paleo to me).

If you work it out logically, in mid latitude zones, there would be less veggie eating in winter when there are less veggies--carrots and the equivalent of kale would be eaten repeatedly, no doubt. In the height of the summer, fruits and veggies would be plentiful and therefore eaten in large amounts (although lots of fruit might also provide a slight weight gain to help people survive the coming winter). Of course, we did much of our evolution in pretty tropical zones, right along the ocean, with fish, seafood, and fruits always available. I therefore wouldn't sweat the details, as you can logically justify many choices.