Ok, so, Pluto is more spherical than Mercury, but the most important criteria is local gravitational dominance.

Which Mercury has, but Pluto does not.

I do not see how this is a difficult concept to grasp.

Yeah, sometimes you can make a hasty definition, and then refine it to a level of consistent clarity, after it is justly critiqued, though it may be multi tiered and somewhat complex.

Thats… thats how science works, thats like the entire fundamental concept of it, right there, improving the level of detail to which you understand reality, via empiricism, logic, participatory debate.

The primary purpose of the planet defition refinenment is to emphasize the importance of relative local gravitational dominance.

I’m trying to imagine you using this kind of logic with like, biological taxonomy.