[notheguyouthink]

I mean, can't you both be right? I doubt the OP was indicating that any amount of sugar automatically and magically makes you gain weight.

You can diet off of pure sugar if you want. Calories in, calories out. I doubt anyone denies that. Weaponized carbs is akin to drinking a beer vs hard liquor. Sugar gets pushed into everything, you like it, you eat a ton of it, and eventually you run into massive problems.

I think the weaponized carb idea is correct. Carb's aren't inherently bad, but when you take out ability to be sated from carbs, when you take out fiber from the carbs, removing natural barriers to consumption, when you refine it to pack in more carbs per weight.. all these things start becoming weaponized carbs. We're refining a drug.

Your reply also ignores sudden climbs in carb related problems. Eg, the India article that the OP linked. Your reply seems to suggest that suddenly, for no reason, India is just wanting to over eat. This over eating trend has been caused by something.

Modern junk food with massively refined carbs seems likely to blame.