The second sentence of the paper that page discusses: it is clear that—to a first order of approximation—our physiology should be optimized to the diet that we

The second sentence of the paper that page discusses: it is clear that—to a first order of approximation—our physiology should be optimized to the diet that we have experienced during our evolutionary past. That paper doesn't dispute the value of a paleolithic diet, rather it disputes what's in that diet.