I'm well aware of the sea change that is going on in KBO theory. The author of this paper gave a colloqium at my institution about 18 months ago, on the dearth of objects already at that time. I'm also aware that there is a lot to be learned in the outer solar system regarding KBO's. The models have changed dramatically in 200 years (like everything in science). First, there was the Oort cloud in the 60's, then the postulation of the Kuiper Belt, which was later verified, and then, more recently, as more KBO's have been discovered, the division of the Kuiper Belt into zones, which are being narrowed and or discarded. Now there appears to be two populations of KBO's, an excited population, whose orbital dynamics have been changed by some outside force since the formation of the solar system (within the last billion years, I believe), and have not had time to reach a stable resonance orbit since then, and then the classical KBOs, which are in stable resonance orbits.
It's a cutting edge field, and things are going to change, no one should be surprised by that. If they are, it just shows that they are not paying attention.