As I've said many, many times, every single Vatican II error subsists in the new ecclesiology and new soteriology. ALL OF IT. And when people claim that the issues raised by the "Feeneyites" are just their imagination, they're in complete denial and have absolutely no clue about what's going on. Matthew even declared that the issue is of little consequence. That couldn't be farther from the truth. I'm going to start a thread pulling out all the problematic statements in Vatican II and showing how they are ALL related to EENS-denial.
Here's the new Vatican II "Church of the Sincere".
Once you start talking about how non-Catholics can be saved so long as they're sincere in their beliefs, then, based on the dogma EENS, you have to say that these non-Catholics are WITHIN THE CHURCH. Consequently, you need to redefine membership in the Church to include all the sincere.
Thus you get subsistence ecclesiology. While the core Church subsists in the visible society known as the Catholic Church, there are outlying members who do not belong in this visible society and yet are within the Church. Consequently, the boundaries of the Church are no longer co-extensive with the visible Catholic Church. Within this new Church you have schismatics, Protestant heretics, Jєωs, Muslims, Great Thumb worshippers. Depending on their proximity to Catholicism, they are united to this Church in varying degrees. They are our brothers because they are secret anonymous Catholics, and yet they are separated from us materially by virtue of not belonging to this visible society known as the Catholic Church. Thus the notion of "separated brethren" and the degrees of belonging to the Church as taught by Vatican II. Converting people becomes an outdated notion; it's just now a question of bringing others to a greater awareness of the "fullness" of the truth, which they are lacking. Bringing them to the subsistent core Catholic Church is just a matter of degrees rather than an essential change from outside to inside.
Now, once you redefine the criterion of salvation to sincerely doing what you believe to be the will of God, and if following your perception of the will of God is now salvific and pleasing to God, then people do indeed have a right to follow even their erroneous consciences, because that's how they please God and saves their souls; they have an objective right to please God and save their souls.
Traditional Catholics who refuse to see this are essentially in schism, because they reject the Vatican II Church on account of the same errors that most of them also hold.