and yours seems to be an attitude of blaming only the individual. Obese? just a lazy fatso. Lung cancer? just a nicotine junkie. etc.

I think you are also being too simplistic and neglecting the complex interactions between personal responsibility and the dependency on the environment we as a culture inhabit and create.

The impact of large corporations optimising consumer behavior is not zero, otherwise they wouldn't spend so much money on it. So those corporations also share partial accountability to the problems they helped create.

The product "facebook" being a tool does not preclude the company "facebook" from accountability.