Truth.Keto did help out when I decided to try to un-trainwreck my body, not because it was magical, but because it was easy as shit to manage, and when you're trying to fix a half dozen habits/problems with your life at once (which the kind of people I mostly see go on keto are, since it's usually someone looking in the mirror and going "Jesus fuck what is my life") reducing the mental load of individual habit changes helps reduce the chances of going "this is all overwhelming, fuck it I'm out." just grab a fist sized chunk of meat, maybe a slice of cheese, and a bag of steamed veg and you're done planning your meal. Greens and meat have much more consistent physical size to calorie equivalents.
I would have probably gotten better results with a measured out balanced meal planning, but when I was changing eating behavior, exercise behavior, and career field at the same time, I was thankful for the simplicity
Its hard to fuck up protein and a choosing from a half dozen veggies, plus salad every day. You have to honestly try to fuck it up.