If the FDA is ham-fisted enough to pull this stunt, I'll consider the equation that stops me from telling everyone how to purify alkaloids from tobacco to have been seriously unbalanced.
Currently, I consider the process to be too complicated and potentially hazardous to freely disseminate it. If the FDA bans e-liquid, then any responsibility I feel toward safety will have been far overshadowed by the FDA's callous disregard for genuine harm reduction and their tacit insistance that we should smoke analogs, not vape, thus passing what is nothing more or less than a death sentence on those vapers who simply can't or won't stop their habit, but who successfully replaced analogs with vaping.
I'd feel quite justified telling everyone how to turn half a pound of tobacco into 100 mL of 30 mg/mL whole alkaloid e-liquid.
Honestly, I believe strongly that the FDA will manoeuvre to place the technology under the thumbs of BT/BP with whom the FDA is well and firmly tucked into bed. It's not the fact of vaping that is the problem, the problem is simply that the FDA wants to see the money go where they say it should go.