same as car and motorcycle drivers,
The argument is that it causes unforeseen health complications, not that it is dangerous. Since the great streetcar scandal, Americans have had literally two choices: own a car, or be left behind economically.
factory workers and owners,
Which provide substantial benefit to others.
smartphone and computer users,
What? You are no longer in left field. You have left the ballpark.
meat and processed food consumers, etc., right?
There is no evidence that eating meat is bad for you, and in fact eating only meat and vegetables has been shown to have immense benefits for some people. Now you've gone from standing outside the ballpark to just being a fucking idiot.
Not all processed foods are evil, although that's the way to bet. But our government has told us to eat them, essentially, so they (we) are on the hook for that one. When it's had anything to say about it at all, the government has told us not to smoke.