There definitely should be a scientific limit for addictiveness, meth versus cigarettes for example. I dont quite care if somebody can scientifically stop taking an addictive substance with reasonable self-discipline but it becomes a problem and elimination of the freedom status if its too addictive that it effectively takes over your brain.

Capitalist society has intentionally trained the general population to believe in free will and the strength of the human mind, such that population members say "I'm better than being brainwashed by ads" and allowing corpos to get away with a lot, lot, lot more manipulative psychological than should be legal.

Believing that smoking addiction is a mind-over-matter problem is one major extension of this.