Even though most recent study on public perception towards e-cigs, showed that the number of Americans who believed that e-cigs are as bad as tobacco tripled between 2012-2015, I believe that 2016 is the year when the tide started to turn around.
Evidence to support vaping is mounting and the UK is showing the way. Namely the RCP.
In 1962, RCP was the first public health institution who publicly called the need for tobacco control after linking smoking to cancer. In 1964, US Surgeon General followed suit. I see a lot of reason for hope that history repeats itself.