Identity Diets Gone wrong

Keto - Vegan - Paleo and on and on 

Where and what time? Those should be the first two questions asked when talking about food. This is why identity diets are first world, out of touch with nature concepts that have never existed in history and are based on ego and not health.  I'll use two extremes to prove the point Eskimo and people at the equator. 
Eskimos need to be cold, ketogenic and eat large amounts of DHA from fish. Why because there isn't much light. The cold condenses the mitochondria for higher energy output, keto involves eating high fat which gives 9 cal per gram instead of 4 cal from a carb or protein plus no light means that carbs aren't growing on trees to eat. The dha from fish is concentrated in the eye and healps to convert sunlight to dc electric current in the body. 
The person at the equator, plenty of light, no need to be cold, keto or eat cold water fish.
Everyone between these two would be subject to seasons more keto in the winter more carbs in the fall harvest going into winter.
Paleo - where was the paleo person since all paleolithic humans ate based on season and location. 
Vegan- better not be an eskimo
Keto- year round only if you don't understand how to use carbs and insulin in the proper way to build muscle. Just because carbs have been misused doesn't mean they are the devil. 

Just because we now can eat summer time foods year round doesn't mean we should. I know it feels good to be "right" it feels good to connect and have a tribe but lets get real about food. It is intimately connected to light and if you give the Eskimo a banana in the dead of winter it the light contained in the banana from photosynthesis tells his body it is summer in the winter which causes a circadian glitch. 
Eat for you location and your time. Don't apply your situation to others. especially if what you do should be very different than what they need to do for health.    

I have found that people don't know why we eat when it comes to light. People in these diets don't know what their diet entails. The best example of this is how many people buy keto protein. (Keto Protein Scam Blog post)
Protein (especialy in powdered form) converts to glucose and is the opposite of ketones which come from fat. Adding fat toa a powdered protein that converts to glucose just meansd that the body uses the glucose and stores the fat. The ultimate scam on people part of an identity diet that is a great tool and shouldn't be used all the time.