Nutrition is so much more nuanced than any of us really know. Everytime I think i know something, I learn more details and learn that there's even more to it.
Sure, Sugar can be acceptable if you use it responsibly. You can even safely consume a Soda if you're in a glycogen depleted state such as after a marathon or from 16 hours of fasting. But, do you really wanna waste you're precious calorie/sugar alotment for the day on a soda?
In any case, it's good that people are starting to think about these things, the pros and cons. Hopefully, people can learn why it's good/bad and thus enable them to make better decisions the next time they need something sweet.
On a related note, I heard Dr. Berg say, sugar craving are a sign that your body is not getting enough potassium. Evolutionarily that would make sense, since fruits are higher in potassium than almost anything else except vegetables.