So what have they resolved?

They have already found an object believed to be larger than Pluto. I can understand the definition must contain more than an orbit around the Sun due to the many Asteroids, Pluto has a sizeable Moon of its own, Charon. Mars has two little rock satellites that are not even close to being spheres. So, size is important after all. Possibly they are afraid they will discover more large objects and they will run out of fingers with which to count them.
I enjpy the entertainment.
jjw