Only if weight loss by Kg is your only metric of success. And dieting is by definition a temporary thing to fix an issue, rather than actually changing eating

Only if weight loss by Kg is your only metric of success. And dieting is by definition a temporary thing to fix an issue, rather than actually changing eating patterns and content permanently. People just generally don't want to do the hard slog (i.e. in permanently avoiding sugar and carbs), they want the short term 'fix,' hence 'dieting.'