Yeah, I wouldn't argue with that. Every single one has grey areas and points of debate, even things we have hard numbers for like sales, which have to be taken in context, and popularity polls, which often have issues with sample sizes/types or methodology. And of course, everyone values each point differently. Failing in one or more areas is never an automatic disqualifier, as there can be strengths in other areas and, as you say, it's not about hitting a checklist but rather taking everything together.
But those grey areas are also, like, what makes it more interesting to discuss. In retrospect the argument would have probably been more enjoyable on both sides if we were focusing more on those actual issues rather than quabbling so much on which ones are the more subjective or objective ones, and I can take some fault for introducing that distraction.
Then again, I do still think that focusing so much on the uniqueness or fun of the moveset is going to naturally invite questions as to how you compare that factor as directly as you can compare, say, the polling totals, and it's in my view more difficult to argue a clear and convincing advantage for one candidate over another in that department. So maybe the objectivity vs. subjectivity debate was inevitable to occur in some form given the setup for the discussion, but I digress. There were points made about the promotion received through VGC; I can acknowledge that those were still at least attempts to argue for Incineroar beyond just affinity for his playstyle, which I can appreciate even if ultimately I did not view those points to be particularly strong ones in the face of my view that Decidueye, Mimikyu, and others have received more promotion overall.