After reading many comments I have completely changed my mind and now fully support a smokers section as long as it does not allow comments about the benefits / risks of smoking.
A traveler who smokes I think has a harder time finding information and accommodations then many of the specific types of travelers who already have their section.
And I'm pretty sure there are more smoking travelers than say lgbt travelers. But for the sake of discussion let's say that there are about the same amount.
What matrix allows one while ignoring the other?