Do you understand what it means to actually be excommunicated, as in BY DECREE, etc?
Get real. You're basically saying, then, that nobody is ever subject to
latae sententiae, automatic excommunication, or you're saying that we cannot know for certainty that a person has been subject to it, or that even if we can know, we are not bound to treat them this way (by admonition and avoidance).
A person claiming to be Catholic, and believing the Athanasian Creed, goes to an 'Eastern Orthodox' service with a friend once every two months. Is the person excommunicated, Gladius?
Why or why not? And are we allowed to pray and worship with the person while we know he is resolved to continue going to the 'Orthodox' service with his friend?
grace BUILDS UPON nature; it does not DESTROY it
I never stated contrary to this, don't try to twist my words.