We need to outlaw sugar and restrict simple carbs in made to order foods.
But I agree with you on your first point: there's nothing wrong with sugar in moderation. But it seems that it's just too hard to keep it in moderation for a lot of people. And that's understandable: high calorie, highly palatable foods are often packed with sugar and fat (hence "highly palatable") but don't contain enough fiber to fill you up and -more importantly- keep you full for a long time. So you're gonna be hungry again soon, despite having just consumed a shit load of calories.
It's too easy to consume more calories than you actually burn, especially since we hardly move anymore compared to previous generations. Our life style is sitting down.
I would say if a food item that people would think should not have added sugar, a very large label would be required on the package that states "SUGAR/CORN SYRUP ADDED".
I heard corn syrup is even worse and that is used instead of Sugar in a lot of places.
I see a strong parallel between this idea and the now-ubiquitous GDPR consent banners.
(/sarcasm)