Comment by munk-a

I think this is somewhat justified, smoking rates were decreasing nationally until e-cigs came into fashion, of course some conventional smokers switched which lowered the health detriments of smoking - but many more of the e-cig users are new smokers.

I'd prefer a full ban but this is at least staunching what was a regression for public health. E-cigarettes, since their introduction, haven't improved public health - they've worsened it.