OK, given all of the above, why then are non-catholic Christians considered “united with Christ” by Vatican II?
If the purpose of the Roman catholic church is to protect against error, then anathema of Vatican I should apply to every Lutheran, Presbyterian and yes, Protestants and Evangelicals out there ( Luis Palau included since he was born Roman Catholic ).
But that is not what is indicated in Vatican II.
United by what we share in common. With the Orthodox churches we theologically have the most in common; then such bodies as the Anglo-Catholics and Lutherans; then the Reformed churches. Let us say the confessional churches, which might include the Methodists. Then such bodies as the members of the Southern Baptist Convention, which might not recite the Apostles Creed, but accepts most of its tenants. Then Pentacostals of every stripe. Then liberal Protestant bodies of every denomination. With evangelicals of ever kind there is a great overlap, but most in the notion that Jesus is the Christ, the Son of the Living God., which faith is expressed in the Nicene Creed in the term consubtantial, which is no more than a one-word, philosophical expression of that dogma.