I would caution that just because your body can make something doesn't mean it will have optimal performance when doing so. People in ketosis do have worse peak performance in sports than those that eat more carbs/sugar.
> worse peak performance in sports
For nearly everyone, this isn't impactful to their life. Only their vanity
True, but also what performance are we optimizing? Do I want to be able to run faster, hit harder, lift more, etc..?
Or do I want to live longer?
They aren't necessarily mutually exclusive, but different actions could result in different outcomes for each.