What do Whole Food Plant-Based doctors say about chestnut consumption?
Wikipedia article on chestnuts explains that chestnuts are carbohydrate-rich, low-protein and low-fat. Thus chestnuts have a nutritional profile very different from nuts like almonds, cashews and walnuts, all of which are high-fat.
"Chestnuts depart from the norm for culinary nuts, as they have little protein or fat; their calories come chiefly from carbohydrates. Fresh chestnut fruits provide about 820 kJ (200 kcal) of food energy per 100 g of edible parts, which is much lower than walnuts, almonds, other nuts, and dried fruit (about 2,500 kJ or 600 kcal per 100 g)."