But your conclusion is still not true. Saying carbs should be avoided is like saying water should be avoided because people died from drinking too much.
Biochemistry and psychology is complicated.
But a healthy diet is well known and not complicated.
Basically: Whole food plant based diet with vitamin supplements (notably vitamin B12) and e.g. linseed oil for the essential fatty acids.
Dr Garth Davis: Americans have become obsessed with Protein https://www.youtube.com/watch?v=XQCt3IhaUtU&feature=youtu.be...
Speaking for just myself, I used to feel that sugar low after my lunch, and I know that craving for more carbs. I gained too much weight as a result. Now I've cut down on my carbs and I mostly snack on veggies these days and try not to overdo carbs at lunch, and that seems to help at least with that sugar low.
* carbs digest into glucose
* too much glucose in your blood triggers insulin production which turns glucose into fat
* a glucose spike can trigger an insulin spike which leads to a glucose dip an hour or two after lunch
* eating fat triggers the feeling of being full, reducing your desire for more food
I have no idea how true these all are, but my impression is that there's at least some evidence supporting these. And if you add them all up, it sounds to me like you get fatter from eating carbs, because that can lead to a glucose spike -> insulin spike -> glucose dip which makes you want more sugar to get your glucose back up. Whereas food with more fat may make you feel full and stop craving more food.