To my mind, this question of etiquette/appeasement/respect is all underpinned by a deeper, more fundamental concern.
Most of us here are ex smokers and as such, we've all been on the wrong end of the vitriolic bile from the anti smoking lobby and we've become conditioned to accept that somehow, we were less worthy of respect and fair game for being vilified and demonised.
When we WERE smokers, then the anti smoking lobby held the moral high ground and were able to justify their demonisation by telling us that we were harming ourselves and others around us if we smoked in front of other people. This message was hammered home and constantly reinforced until it sank into the minds of not only ourselves, but also the public at large.
This has had the effect of making it seem acceptable to confront, belittle and berate smokers for daring to light up and now, the anti smoking lobby want to project that same negative image on to vapers too. The difference is that now we vape instead of smoking (apologies for the generalisation dual fuelers), they don't hold the moral high ground anymore and so they can't justify vilifying and demonising us anymore.
That's why they want to lump us in with tobacco at every opportunity, so that they can maintain their power and control and why it's so important for us to try and cement in the minds of the general public that there IS a difference between smoke and vapour.
And there is a difference isn't there? If we really believe that 'passive vapour' can be damaging for people around us, then it sure as hell must be damaging us even more as we absorb a good portion of the vapour contents when we inhale. If this is the case, then why don't we just give up and go back on the fags?
The general public are mostly uneducated about vaping, which given the misinformation and scaremongering that the media seems to be full of, is unsurprising. But who is going to actually educate them about vaping? The government? The anti smoking lobby and their pharma backed health 'expert' stooges?
The main responsibility for educating the public would seem to lie with us ourselves, because those that SHOULD be doing so have a vested interest in perpetuating tobacco smoking. If we act as apologists, then that merely reinforces the erroneous belief that vaping and smoking are the same thing.
If we want vaping to be seen to be acceptable, then we need to change the way that the public views it and also, we need to free OURSELVES of the associated mental programming that we've had forced into our own minds. We have no call to be guilty, ashamed or apologetic and we shouldn't accept anyone trying to force us to feel those things either.
I had a time in my life where my so called 'lifestyle choices' were deemed to be unaceptable/offensive to some people and I was vilified, demonised and belittled by them. This made me feel the same feelings that smokers have been programmed to feel... guilt, shame and a sense of being unworthy of respect. I tried to appease these people by being deferential and segregating myself to minimise potential conflict, but that didn't alter their perceptions of me or my own self perception.
It took me a long time to realise that I had a 'victim' mentality and let me tell you, if you act like a victim, there are plenty of people out there who will be happy to treat you like a victim. The only way I got my situation to improve was by standing up for myself and fighting back against the small minded and uneducated. Freeing myself from my own pre-programmed negative self perception was also the only way I could regain my self respect and sense of worth too.
THIS is what's needed when it comes to vaping imho... we need to stop being apologists and stand up for our right to be treated as human beings, not easy targets for those who feel that they're still entitled to berate and belittle us.
If we act like victims, then that's exactly how 'they' will treat us.