Those are all attempts at objective measurement. You are using objective frameworks to argue objectivity does not exist. :-)
The fact that critics disagree does not prove there is no objectivity. People disagree about scientific questions too, but that does not mean science is purely subjective. Disagreement just means the question is hard, not that there is no answer...
The whole reason you cited that score is because you believe it points to something real about the film quality. That is an appeal to objectivity whether you realize it or not. :-)
I argue those manipulated reviews [1] are not...