I think different cultures/ethnicities have different genes based on the available food sources. So, to criticize someone on their diet preference is outrageous.
Case in point the indegenious people in Alaska have a very high protein based diet. Fish, moose, carribou, bear, salmon, whale and few natural found veggies/fruits/berries. You don’t find cornfields, potatoes and other domesticated veggies in wide abundance here. 8-9 months of frozen tundra leaves very little time for a growing season. Lots of dried meat and fish for winter.
So, the introduction of starches and heavy carbs to their diets has caused an influx of obesity. I want even begin their inability to process alcohol effectively.
So, your genetics play a huge role on how you process foods. A high protein diet may be very beneficial. I went and saw a dietician, and based on my body type and genetics I was informed I needed a high protein/low carb diet.