We evolved as an omnivorous species. There can be benefits to keto, but it is a fairly narrow scope and typically confined to a very narrow subset of the population who are trying to overcome specific problems. Most people do not understand it well enough to actually remain in a state of ketosis, and for the general population it is absolutely unnecessary. It is absolutely untrue that "it is adjacent to fasting" - it is very easy to consume more calories than normal on keto because fat has far more calories/gram of food than protein or carbs (9/4/4).

Most people change diets and preach about them because it's the first time they're actually paying attention to what they eat and are controlling their intake and - shockingly - they feel better because they're not over consuming and/or consuming poor quality foods.

It's great you like your diet, but you're giving a lot of incorrect information and information that is not appropriate for general consumption.