Progressive Catholics refer to Vatican II for support of their attitudes. Vatican has become their authority. Now, his authorities are Vatican II and the New Testament. Vatican II reaffirmed the Supremacy of the Catholic Church in matters of Salvation. Who accept the Church's entire system and all the means of salvation given to her.
Baptism still carries the magical power of life.
By Baptism one becomes truly incorporated into Christ and he is re-born to a sharing of the divine life. The infant is born again at his baptism. He will never need that experience again. Christ is still worshipped and eaten in the substances which by the magical words of the priest are transformed into the literal flesh and blood of Christ. Therefore the Eucharist is of extreme importance in the Church's life.