Astonishingly simplified. There is far more evidence for the health improvements from ample amount of strength training and aerobic cardio exercise. Good luck lifting 3x and running 3x a week on "low carb".

Amongst acquaintances I see low carb adherents. I wonder why they are always the ones woefully less fit than the serious athlete acquaintances. Amongst serious athletes there is no low carb proselytizing lol.

For sure it can help people who don't exercise and thus don't use much carbs in the first place. But that is far from ideal health, and thus the ideal diet.