Are you confused by my assertion? My assertion is that Pope Pius XII teaches that heresy is one of those sins that per se severs a man from the Church. I do not say that every sin severs per se a man from the Church.
I know that you
"do not say that every sin severs per se a man from the Church." I am the one who is saying that, I am saying it because first, it is true and second, that is what PPXII is saying when that sentence is read in context. I am saying that sentence takes on a whole new meaning when it is taken out of context, which is what you are doing, which means you are giving new meaning to the teaching of PPXII.
Look, everyone, myself included, can look at what the CPs' (Conciliar Popes) have said and done and based on that evidence, say "they're not even Catholic." To be absolutely accurate, what we should say is "what the CPs' have said and done is not Catholic." This we know is truth and we can say, are permitted to say, and should not even keep quiet about.
Sedes quote theologians and misquote popes to support the idea of sedeism, well, I am quoting one of many theologians that teaches that sedes are schismatic and are therefore not members of the Church....
"Public schismatics are not members of the Church. They are not members because by their own action they sever themselves from the unity of Catholic communion....by such a rebellion that he would really in practice refuse to recognize the pope as the head of the Catholic Church."
(Dogmatic Theology, Volume II, Christ’s Church, 243) What you should do, is take time to find out and explain how a Catholic who has fallen into the mortal sin of heresy and wishes to repent, can (and is urged by the Church) to walk into the confessional, confess his sins, and receive absolution if he is not a member.