I agree. I for one cannot "low carb" tried it and had issues - the worst was the impact on my mental state/flexibility
I've always believed in the biochemistry axiom "you burn fat in flame of carbohydrates"
The problems people have now is that they generally take in far too many calories and food volume for their levels of activity.
Yes, calories from fat or calories from sugar - if you take in more calories than you burn through physical activity - your body will make fat out of the excess calories.
The metabolic cycle can burn fat, protein, or carbohydrates for energy - and it can also deposit excess energy in the form of adipose tissue (fat) from any of these sources.
Thinking that not eating carbs will automatically make you lose weight is as silly as thinking you cannot get fat eating low fat or no fat foods.
Cotton candy is a fat free food!
Lard is sugar free!
Should make some people question their assumptions - but it most likely will not.