Bodybuilders use carbs restrictions (keto, intermittent, kind - complex vs simple carbs) to regulate muscle mass and fat, insulin and GH sensitivity, water retention mediated by glycogen, etc...
Leading up to a competition and getting into single digit BF%, yes. But throughout most of the year they are generally consuming a good amount of carbs. I don't think using bodybuilders as an example translates well to good habits for the general population.