In the support/ contrast list, " a few" is listed as word that doesn’t change logic. For this question, Although the passage of years has softened the initially hostile reaction to his poetry, even now only a few independent observers ------- his works.
Shouldn’t be a few independent observers and independent observes same? But in Greg Big book solution, a few is taken consideration like all - a few = most praise his works.
But I understand as independent observers neglect his works after considering as a few , not a logic changing word.