The answer has to be far more nuanced than that. There have always been bad popes. Blind loyalty to a bad shepherd does no good for anyone. If the pope violates dogmatic doctrine, should one follow along whistling a cheery tune? One must form a morally mature conscience and actually think, and temper such consideration with a sincere consultation of scripture and doctrine.
Ex Cathedra is Ex Cathedra. Everything else is taken under advisement.
With a bushel of salt.
I don't know if there has ever been a time in history when absolute loyalty to the pope was less likely to make you a good Catholic.
What if the Bishop of Rome submits his mind to the mind of cardinal Kasper and his “profound theology” in support of Communion for adulterers rather than submitting his mind to the mind of Christ - “What therefore God hath joined together, let not man put asunder”? It is a fact that the Bishop of Rome has promoted and praised Cardinal Kasper’s theology. It is also a fact that Cardinal Kasper’s theology is contradictory to Church teaching.
“One suggestion in particular, that the Church might one day allow divorced-and-remarried Catholics to receive Holy Communion, prompted responses by Cardinal Gerhard Ludwig Müller, Prefect of the Congregation for the Doctrine of the Faith, and Cardinal Raymond Burke, Prefect of the Apostolic Signatura, emphasizing that not even the Pope has the authority to redefine the sacraments.”