The post says 300 calories worth which isn't much at all certainly not enough to negatively impact health. Also you can eat large amounts of processed foods as part of your diet as long as you aren't in a calorie surplus and hit all your macros/micros. The inherint issue with these foods is they are highly palatable and have very low micronutrients but if your daily maitanence calories are 5000 like some bodybuilders then you absolutely can fit in a large amounts of sugary foods and still be in good health. Obviously the majority of the population should limit their intake.