It is true that the temptations of heavily-marketed unhealthy food are stronger than they were in the past. This does not mean that it is not your fault if you get fat.
Assuming your sarcasm is genuine, I find your particular line of thought to be very endemic of a particularly damaging variety of the victimhood mentality.
Well, I'd say poor youth habits are where all this begins and they can be tough to break. Little by little I started minding my nutrition and started losing weight. I always read the nutrition labeling, now...to the point where it might seem obsessive to an observer. Not that I'm the paragon of health and fitness, but I at least pay attention to what's going in my body - both good and bad.
This seems to be a typical US american thing as well and why it is easy to become obese and unhealthy in the USA.
Tales of evil sugar and tales of good healthy high fat high protein diets with much animal products.
Worldwide scientific experts warn against much sugar and much fat and much animal products (high fat, high protein).
https://www.youtube.com/channel/UCGJq0eQZoFSwgcqgxIE9MHw/vid...
https://www.youtube.com/channel/UCJRjK20fHylJyf-HiBtqI2w/vid...