" Look, you're either in communion with Rome, or not. If not, you don't have the right to call yourself Catholic."
That's a bit broad, isn't it? The Roman Church is only one of the particular churches within the Catholic Church and I think you will find that +BXVI has been quite clear that the Orthodox Churches are quite Catholic though Rome is in schism with them. Unfortunately, syncretism seems to be spreading in the Roman Church, not only in liturgics, but also in its theology. I recently finished reading a book about modern African Roman Catholic theology. I think the name of it is "The Face of Christ in Africa" or something like that. Frankly it was more than a little scary. One of the concerns which Orthodoxy has with Rome is this syncretism which seems to have reached something of a peak since Vatican II. I know the hope of our Orthodox theologians is that +BXVI is gradually rolling it back.
Yup, never gonna' find those Orthodos "syncritizing" with anybody else ~ or each other!!!