Being Petrine is being where the empire is. When New Rome was founded, is superceded the backwater on the Tiber. When you said Vatican II did not change Dogma you were right. It could not, As patriarchy within the larger Church, it did not have the authority to change Dogma. No purely Roman Council does.

What you call Apostacy is simply heresy. Apostacy is actually publicly leavig the Church. It does-not sneak up on you by disagreeing with either dogma, the Magisterium or natural law.