The standard mantra against the dogma is that ignorance is salvific, sadly it seems that nearly the whole Catholic world embraces this error as if this is the dogma - meanwhile they reject the actual dogma and condemn as heretics those who adhere to it:
"Therefore, no one will be saved who, knowing the Church to have been divinely established by Christ, nevertheless refuses to submit to the Church or withholds obedience from the Roman Pontiff, the Vicar of Christ on earth." - Take from the Letter from the Holy Office, & Excommunication of Father Feeney
Baltimore catechism:
168. How can persons who are not members of the Catholic Church be saved?
Persons who are not members of the Catholic Church can be saved if, through no fault of their own, they do not know that the Catholic Church is the true Church, but they love God and try to do His will, for in this way they are connected with the Church by desire.