I think anti-smoking was done to fatten a bottom line. It was largely a money grab by the states, and state/federal/tobacco money continually poured into anti-smoking organizations.

The reason why nobody cares anymore is because the money dried up (lawsuits ended, settlements happened), and now tobacco companies themselves are using the laws to keep smaller/foreign competitors and safer alternatives (such as Swedish snus) off the market.

Now that there's no money to be had, anti-smoking initiatives are going nowhere.

edit: luckily, this money grab contributed to improving the health of the public - but it was still a money grab.