But these points rapidly sink into quicksand, because sometimes the person is the significance. It depends upon where the objective significance is supposed to be. It has a lot to do with proper representation and judgment, which are easily overwhelmed by corruption. And the exclusion test defines the validity - is it part of the evidence or an excuse for excluding other points. So here's another point which attempts to step out of the quicksand.
Objectivity depends upon specifics which can be pinned down and analyzed further.
Subjectivity consists of vagaries which cannot be identified. Here's another point. Objectivity includes rationality, where one point is related to another point to develop consistent relationships. Subjectivity allows no relationships between points. Each point is a stand-alone claim, which rests upon the supposed knowledge of the person who makes it, and no test is possible to determine whether it is true or not.