Q7: You said that “Separation cannot be a matter of private judgment but a matter of ecclesiastical practice for the sake of pastoral ends.” May I know how do you reconcile this statement with your advice in your first answer: that a Christian ought to separate from Roman Catholicism? Isn’t that a matter of private judgment?
A7: You have misquoted me, and excluded my actual opinion from the statement.
Unequivocally, this person you describe in your Q#1 is under the anathema of Rome. He should leave that church and seek one which does not make the mistakes Rome has made confessionally, ecclesiastically, and ecumenically.
That is: because he has been anathematized by people who are abusing their ecclesiastical power, he ought to leave. They have told him everything he needs to know, and have giuven [sic] him their verdict on his faith. Because they admit they do not share his, he is free to go.