At the normal (I think it's normal?) 3.7v power that the original tests were conducted with ...
Not essential, but it's often useful to gather the facts before launching a polemic.
Voltage is not a measure of power.
We vapers tend to concentrate on resistance, measured in ohms, and not voltage.
Vaping is an example of exceptional, fast, competitive, technological innovation aimed at making money by satisfying demand. 63 years the child of the welfare state, the dynamism of an industry largely unfettered by regulation has been a joy to behold. It felt and still feels rather daring and fun to choose from among hundreds of tiny suppliers with no nanny there to help, just a bit of word of mouth, a limited high street presence of advisers/salesmen in shops and an avalanche of YouTube reviews and tutorials from all over the world.
The upshot is that we vapers choose the equipment and the liquids which taste best. This is revolutionary. In 45 years of smoking 40 Benson & Hedges a day, I never once said to myself "hmmm, this tastes good". With vaping, I judge by taste, for the first time, and I believe that other vapers do.
And what we find is that you get the best tastes by sub-ohming, i.e. using equipment with a resistance less than 1 ohm. That's just a fact.
We get more vapour/better taste by sub-ohming. We use more liquid as a result and we know to put less nicotine as a result. I was a very heavy smoker and I am a very heavy vaper. I am currently getting through about 12.71mg of nicotine a day. That's 64.70% down on the 36mg of nicotine I got from Benson & Hedges, since you ask.
And the 400mg of tar per day from Benson & Hedges? Down to zero. No tar in vaping.
The Royal College of Physicians estimate that vaping is about 5% as dangerous as smoking. The Department of Health recommend that vaping should not be covered by smoke-free legislation. The British Medical Journal report that high smoking cessation rates are correlated with increased vaping. The International Journal of Environmental Research and Public Health report that young people who have never smoked do not tend to become habitual vapers.
All of which suggests that there's something there worth advertising.
You say: "The Government, well several of it's MP's, received a lovely sum from the e-cig lobbyists a few years ago which resulted in the Government allowing e-cigarettes to be advertised ...". How many is "several"? How much is "lovely"? How many is "a few"? Answers, please.