I very much agree with you that it's risky for the inexperienced to push the envelope with minimal knowledge and ignorance of the possible repercussions if things go wrong.
That said, we were all new to vaping at one time and we all learned as we went along. Having more experienced vapers to help in the learning process is an absolute godsend and I'd urge anyone thinking of sub ohming for the first time to draw from the ample well of knowledge we have available to us here in the planet.
But just to play devil's advocate, I remember a certain erm... bittervet on the original UKV predicting disaster when people started drifting down to 1.8/1.5 ohm cartos and using VV devices. He maintained that 3.7 v and a 3ohm atty/cart was good enough for anybody.
It's fairly obvious that doesn't cut the mustard for some folk and the only really important point (in my mind anyway) is what actually does cut the mustard for person using the set up and keeps them off tobacco.
I applaud you for caring enough to share your views and I agree with a lot of what you have to say, but I think if someone is willing to take risks and accept responsibility for their own actions then they should be free to do so. The trouble with that though is knowing what the actual risks are.
A mitigation/education strategy would do a lot to alleviate fears of potential disaster. Mitigate possible issues by educating new users.
Vendors can play a big part in this by making sure they explain that sub ohming is fairly advanced compared to say, an ego/evod set up and by maybe trying to provide a crib sheet of basic safety info about shorts, suitable batteries etc. Forums like POTV can offer a wealth of knowledge and experience and new users should be encouraged to ask if they're unsure about anything (just don't ask me..that'd be like the mentally deficient leading the blind
).
But not everyone uses forums/facebook/whatever and so won't have that guidance to call on. That's where basic crib sheets might prove useful (I don't want to nominate you for something that you don't particularly want lumbering with, but have you considered composing something like this and making it available to download? Might come in handy for B&M vendors?).
Your concern about new vapers is commendable but a simple analogy with children springs to mind : you can't wrap them up in cotton wool all their lives.. although with new vapers, I suppose you could teach them how to wick with it.
(others may disagree) it's just that my knowledge and skills are pointed in a different direction. It's easy to say that people should research and understand what they are doing. That in my view lets the manufacturer and vendors off too lightly.
best of both worlds
maybe a bad comparison?) 
