That maybe true but there are reams of evidence to support that prohibition of anything does not work. It's one of those feel-good measures that politicians can pat themselves on the back for and point to for their  constituents as proof that they are doing something, but has no practical value whatsoever.  Education is absolutely essential for sure but I submit that getting people to switch to something safer, safer not safe,  is another good approach.  Sweden has done this and they now have the lowest smoking rate in the Western world.  The problem is in America the old guard will not tolerate anything that appears to condone a vice.   Just like they wouldn't let the government distribute hypodermic needles to stop the spread of AIDS because it "condones heroin use" they won't let the government promote smokeless tobacco or Vapour  because it promotes a vice.