What if aesthetics were more a matter of perception than of judgment? (I'm thinking of the old Myers-Briggs paradigm, doubtlessly discredited by now.) In other words, if we are arguing about what bass player played better with Bill Evans, we would first have to learn to distinguish between the players in question. If we could pass the blindfold test, and then describe in words the differences between the players, then we would have a right to participate in a discussion. In any case, the results of the debate (who is better?) would be less interesting than the discernment on which it is based.
By the same token, someone who admires all of poet's work as a piece, rather than preferring one poem to another, would not really be exercising any perception
Judgment does not follow directly from perception: two people perceiving the same thing might still disagree. But someone who cannot tell the difference between two bass players has no business in the bass-player contest judging box.