Ah, I see. But why wouldn't we? We're Catholic after all. This is what I do not get with Eastern Catholics, and I admit I got caught up in this. We're trying to be like the Orthodox in terms of our theology on the Papacy (or lack of it for the Orthodox). But the fact that we're Catholics we should be accepting these dogmas with no ifs and buts. If we don't, then we should be Orthodox. It is as simple as that.
And they are heresies. It is as simple as that.
And it is the opposite for Catholics. That is why I said Eastern Catholics shouldn't believe what the Orthodox do about the Papacy, otherwise they would be heretics from the Catholic point of view.