This thread has wandered way off topic.
Grant – I think that those mince pies have clouded your judgement! Don’t fall for the pro-Pluto propaganda. The term is loose but the possible criteria for “orbit clearing” are strong. One of the best was actually proposed by Alan Stern himself. In this scheme even Mars is five orders of magnitude above Pluto:
https://en.wikipedia.org/wiki/Clearing_the_neighbourhood
Have a great Christmas everyone.