Not that he needs to "justify his post". Simply giving a more accurate description of his smoking level would have put it in context. Enough people misinterpreted his term "light smoker" to demonstrate there was a fundamental misunderstanding. Anyway, the debate wasn't strictly about how much he smoked. It was about the general "Attention all newbies, your search is over" tone of the review.
I would hazard a guess that the vast majority of newbs who have gotten to the point where e-cigs seem like an attractive alternative are way over 4/5 cigs a day. Most of them probably don't pay much attn. to the signature, put 2+2 together and realize that he was a borderline smoker in the first place.
Frankly, I wouldn't even pay much attention to the recommendation of someone who quit a 4-5 cig/day "habit", especially after only 20 days and having ever only really used one PV. I know people who smoke 4-5 cigs a day for months and just casually and effortlessly quit for weeks or months, then repeat the cycle, without a second thought of quitting or not quitting. They're called "casual" or "social" smokers. My sister is one and she's done this for years. I could never understand it, but there ya go.
Asking my sister for advice on the best
device to quit smoking would be kinda' like asking a vegetarian for his recommendation on the best BBQ rib recipe.