I tend to agree with bombastinator. From everything i've seen and read, closed pods with high nicotine are what kids prefer, and mint Juul is the most popular. Sadly, it is pretty easy to envision a scenario where my access to sweet ejuices is curtailed and closed mint pod systems remain available at every gas station.
This is because you have a discussion being driven by anti-vapers who are simply obsessed with sweet ejuice flavors.
Unrelated speculation, I wonder if the erroneous association of dessert/fruit freebase nicotine vape juice and underage vaping is due to the fact a 220w mod is far more visible, and a kid using one is much more likely to be caught than a minor using a closed pod system. Therefore, such devices would be overrepresented when schools and/or parents take an inventory the various vaping devices they confiscate.
I wish there was a way to convince the disengaged majority and good faith actors who are worried about teen vaping that they are focusing on the wrong thing when they complain about flavors.