For me, a big case for VJ is that even if your focus is 100% finding the star player, it doesn't seem to matter much if the guy was a high usage player before the NBA. The easiest way to get a star is to get one of the elite prospects (like Flagg or Harper). When you look a the next tier of prospects, the stars are fairly split between high usage and low usage guys. Both player types will need a significant amount of development to become a star.
OTOH, it also doesn't seem like drafting a lower usage guy is any safer. They bust just as often.