1) an e-cig is not a quitting smoking
device it is a different delivery method for nicotine. many people have slowly lowered their nicotine levels over time and quit. but it is still a form of delivering nicotine. so correct on that...
2) battery powered not tested on heavy smokers and their patters.... look on this forum lots of testing, yes it is different, I have had a battery die, I have also had a pack of cigarettes run out.
3) Propylene Glycol USP Food Grade, read the MSDS
Propylene Glycol USP/EP (PG USP/EP) there are many references to it in a different grade
4) Tetramethylpyrazine I have no knowledge of this being used in any of the e-juice that I have bought notice this is one thine mentioned with no where to see where the claim is coming from
5) no mention of the 3000+ chemicals that we get with our analogue vs vapor. VERY few marked e-cigs as smoking cessation, but a smoking alternative, without the tar, and I for one can now breath when I wake up instead of cough