Why the remote respons? I hope I can give a hint why many orthodox gives a mute respons:
1) The pope still concider himself to be the center of the unity of the Church. This was NO the case in the ancient church where christians in ALexandria gathered around their pope, christians in Antioch around their patriarch etc...all the local Churches were self-governing.
2) To be an orthodox pope, you must have the same faith as the Councils had during the first millenium. But when the pope began to see himself as the universal bishop (at the 8 th century) he later dared to change the credo, not by a concilium, but by his own authority, thus excluded all other bishops who opposed this change in the creed who in the eight synod had condemned filioque (this change).
3) Becuase John Paul II and Benedict XVI believes they are infallible when they speak ex-cathedra and in this dogma i included the teaching that the roman pope never can guide his flock the wrong way...but many popes have been condemne as heretics ...for example, pope Zozimos, pope Honorius and many others...
4) Because the roman catholic church today have so many extreme divisions within herself that we actually can talk about different creeds or interpretations of creeds. The pope is more like a center of a differentiated group that disagrees over fundamental dogmas.
5) To be a pope, you must have an orthdox baptism and since no orthodox priest baptised Katol Woytola or Joseph Ratzinger, they cannot be popes.