At the end of the day any rigid diet the restricts processed sugars is excellent. Keto indirectly ends up addressing this, and the rigidity of it makes it particularly effective.

I find that keto excludes a huge portion of the population that is not willing to give up complex carbs in some capacity. As long as they drop outright sugars and grains, a person should still be able to get the advantage of keto while being on a more follow-able keto-lite.