Cutting carbs is an illusion. It cuts calories (Because carbs have calories) and in addition, because your muscles need carbs, when your muscles lose carbs, it loses water as well. Therefore, you lose lean mass. This creates what appears to be greater weight loss, but really isn't.
There is no need to restrict carbs. It is a very popular trend, but despite popular belief, it's not a new trend, either. There was a low carb craze in the Roman era and there was one at the turn of the century as well. Like all trends and fads, those came and went and the age old axiom of eating clean, whole, unprocessed foods in moderation combined with exercise still reigns supreme.