Like I said, believe what you want.
I remember doctors saying that smoking cigarettes was not bad for you, nor addictive, in front of a congressional hearing. Those same big companies also had scientist and doctors saying that their products were perfectly fine, non addictive, and not targeted towards children.
Yet they were not being honest, they were paid to say what big business wanted them to say.
Follow the money, find out who sponsored those 'studies' in your links, I bet some, if not all, will lead back to Koch brothers, in one way or another.
Smoking, in a sense, is the same as pumping tons of pollution into the atmosphere