The Lancet seem to be urging caution. I'm all for vaping and think it's much safer than smoking but vaping is fairly new and credible studies of drug use happen over generations imo, not in the space of 5 or 10 years.
Sadly as part of the EU technically they have to adopt the TPD. So it is all a big question. Then there is TW who are challenging the directive in court beginning of next month. Only time will tell