I would be happy to see a 15 year old be able to vape. I have at least 2 grandchildren who vaped around that age, and they both previously smoked. Now they both still vape and neither of them smoke.
Thing is, they vaped then even though it was illegal. And unless vaping is wiped from the face of the earth they would be able to vape in the future no matter what the law or their parents or anyone else thinks. Our best chance of giving them that opportunity is to keep vaping alive, not to make it legal for them.
Perhaps in this moment that is pre-FDA final rule, what you say makes sense. But only in this limited time period. Without an explanation on why you arrive at the conclusion you do, I would just emphasize strong disagreement with what you are purporting. And would note that you are essentially saying it is very okay for kids to go to underground market to obtain product that would arguably me more harmful, as DIY'ers would likely be their best option.
Not all arguments about vaping are equal. Some will be hard to win, some will be impossible to win, at least in the short term. If we bundle them together into an all or nothing package then the package will sink or float based on the heaviest rock in the bag. It seems like if we advocate for legal access for teens we are jumping into an unwinnable fight over something that won't even make any difference.
To the degree that the age restriction is an unwinnable fight, is similar degree to which all our fighting on any possible CTA is winnable. All opposition has to do is accept short term defeat on the rare CTA we do win, and then keep plugging away at that same item until we are worn out and/or they've stacked the deck with those who will push it through. In essence, we are conceding on the point that for some people (minors) vaping, even non-nic eLiquid, is inherently dangerous/wrong. To not realize how much political mileage can be had from this is to not be on our game when it comes to all other CTA's. All of them.
What is the last major CTA that we won on? And that opposition has given up on? Where is their equal concession to the monumental concession you are suggesting we not fight them on?
It is at the point that if those questions aren't answered directly / honestly, then it is hard to join fellow vapers in CTA's. Especially if those CTA's involve language of fear mongering. They instead become unwinnable if the monumental concession is deemed unwinnable.
Opposition is giving us hell on little things and not holding back. Why wouldn't we give them hell on the one that rules them all and show up as if there is sense to making it legal, rather than resorting to fall back notion that recognizes a) kids are going to use no matter what and b) we adults are somehow very okay with minors accessing illegal / underground market?
The ONLY reason it appears unwinnable and an uphill battle is because 90% of the vapers have conceded on the issue. It is, in reality, like any other issue that faces us. If 90% of vapers thought flavors are item we ought to concede on or that we ought to concede on online sales, those would appear the same. And as both of those have direct connection to the age restriction issue, you can rest assure that opposition will use our concession to keep pushing (hard) on those items.