Ah. You seem to have missed my use of the word "objective" - "the 'everybody has an
objective price' crowd." Or, those who subscribe to the theory that trade values are ultimately absolutes that could hypothetically be
objectively measured and compared, based on the presumption of some kind of fluid market economy of players. Of course, such a thing would require that players and picks be fungible, and they most certainly are not, so measurement and comparison (while it definitely happens) is irretrievably locked into the world of subjectivity. They're the sorts of folks who would try to force trades using unneeded assets by arguing "you can just flip him afterward for what you really need".
What you're referring to is more about being aggressive and unsentimental in one's own evaluation of one's assets, which is a different thing entirely; it's a philosophy of
how one approaches the barter and prepares for it, as opposed to failure to recognize that it's barter in the first place.