The one thing the tabacco companies have done, is push their product with much more subliminal advertising than many other products. Plus, the big four (CEO's of the four major tabacco companies) lied their butts off in front of a congressional comittee. That makes them easy to be a target.
However, even with that, nobody ever put a gun to someone's head and made them smoke. The tabacco companies did not learn of tabacco's ill effects over time any sooner than the rest of us. People have been smoking tabacco since the beginning of time, so imho, it is not reasonable to blame someone's 20th century death on a company selling a product that has been in common use for at least a thousand years.
Why the book (with a tabacco vs. gun subject) was more acceptable to me, was there was that the facts in the book were mostly true, whereas in the movie, they were mostly false. Even then, I did not agree with the "heroes" in the book in their quest to bring down the tabacco companies.