To commit heresy, one must refuse to be corrected. A person who is ready to be corrected or who is unaware that what he has been saying is against Church teaching is not a heretic
If Rome could get away with it, we’d be burned at the stake, like the “heretics” of old.
That's a jump in reasoning if I ever saw one.
And right there in the article it says Proddies are heretics.
You missed that part, huh?
In other words, a heretic is anyone who refuses to bow to Rome. Or more precisely and in reverse, Rome declares anyone who formerly bowed to Rome, but refuses to do so now for expressly and consciously religious reasons, to be a heretic. Rome can never be guilty of heresy, because it gets to define heresy for the rest of us. Surely you've seen these rules spelled out before?
Rule #1: The boss is always right.
Rule #2: When the boss is wrong, see rule #1.