This reminds me of a time in middle school, where we were too loud in the cafeteria and teachers from neighboring classrooms complained. They tried to quiet us down in different ways, but none of them worked. Eventually it got so bad that the principal ordered us to have silent lunches, where anyone who talked got written up for detention. My friends and I, not wanting to get in trouble, communicated with a rudimentary, yet perfectly silent, sign language. The principal thought that was circumventing the rules, and gave us detention.
Banning smoking makes sense in that it bothers other players (and can be harmful to them), and there's the risk of starting a forest fire. E-cigs and chewing tobacco don't have either of those issues. Banning them is an asinine move--all it does is prevent smokers from using an alternative that doesn't bother anyone.