As a recent newbie, YES,the idea of VV is too much to grasp, at first. I don't consider myself stupid (!) but I had a difficult time understanding all of the new terminology, even AFTER reading Tom's excellent thread and watching innumerable YouTube videos, PBusardo and many others. It wasn't until I had let the dust settle, refilled some cartomizers, burned many more and got a vivi tank...boom! Finally it clicked.
The ease of use for the Ego type batteries is being discounted. I KNOW a prothingy is "better" but for a newbie, it is all too much to comprehend, sometimes.