A Catholic who is disappointed with the pope is a disappointed Catholic. This is a common enough state of affairs in Church history. But a Catholic who imagines that he or she participates more fully in the charism of magisterial authority granted by the Holy Spirit to the pope than does the pope himself – and who decides that he or she has the authority to set the spiritual standard by which the official teaching of a papacy can be judged (and judged a failure) – is making the mistake Martin Luther made. It is the same mistake many modern liberal theologians make. They have made themselves the authority, the touchstone, the standard; and the pope, whoever he is, should, they insist, bring himself into accord with what they think or be spit out like a piece of rotten fruit. This is the way of folly and division.
(source: You Don’t Have to Like a Pope)