Your view is kind of refreshing. But you haven't been here for very long, or Ginny King is another account for someone who has been here for a long time. Either way, you make a point because of inexperience with HP or because of, well, you fill in the blank.
HP has asked members to flag hubs for infringements to the HP rules, to the point of setting up the hubhopping feature. They've clearly said, by way of this feature, that they rely on the HP community to do their monitoring for them.
It's not a perfect system. In fact, it's a system that I think can exist only on the net, in a pseudo-social community. (Too much to be said about that here.)
Anyway, those who flag hubs are not doing it, I think, because they have nothing better to do. They believe they are contributing to the betterment of this site.