At 50, 24 or 18, to me, it seems an attempt by Vuse to keep you addicted to nicotine, hence, continue to buy. Just as BT had done for ages. and Juul's goal as well.
imho, the beauty of our vapes is the ability to easily and reliably control our nic intake. Since I wanted to quit the addiction to cigarettes, I then want to reduce my dependency on vaping. I'm down from 18 when I started to between 2.5 to 5.
I didn't want to replace one uncontrolled addiction with another. Yes, I'm still addicted to nic and vaping, but for me, it is by my choice.
Vuse takes that away from me.