I think it's something like, we have a decade of vaping in the UK, and a single death that relates to vaping - and from what I dimly recall, again it was someone using illegal vaping stuff rather than legitamate sources.
Still, it's a single decade, so it's not as if it's a serious amount of time to see ill-effects as such. But it's also one of those interesting in just how quick many governments are to snapkick legislation vs vaping in general without worrying about the science but keeping that initial "related to smoking" backlash. Which you rarely seem to see with booze...