"Coumarin is still used as a legal flavorant in the
tobacco industry, particularly for sweet pipe
tobacco."
https://en.wikipedia.org/wiki/Coumarin read all about it
I think people were concerned about the hot cinnamon as in "red hots" and not the kind in cinnamon roll for instance. As I recall there was the usual panic and rush to judgment that was pretty much rescinded. Anyway, the FDA has controlled cinnamon for many years and, besides, what we get in flavoring is synthetic and not the real thing. I also think this cinnamon thing is confused with the courmarin control in real vanilla.
And, yeh, don't want to give the ANTZ more fodder for their propaganda machines or to feel responsible for harming their health. My blood pressure is super good since I started vaping but I do have compassion for those who get all emotional and let theirs spike.