are you denying that vatican 2 was heresy?
Vatican II was a Council, not a doctrine by itself. Texts such as Dignitatis humanae, that have emanated from the Pope and a certain amount of Council Fathers contain grievous errors, and they must be condemned and renounced. The formulations used by the Supreme Pontiff to authorise such texts were of a low binding force, and they are comparable to those used when, for example, approving a book. People stare themselves blind upon the titles of docuмents ("constitution", "encyclical" etc.), but the magisterium of the Church does not work in such a bureaucratic way. The formulations in the texts themselves are what matter, and a Pope could even solemnly define a dogma during a sermon, if the necessary criteria would be fulfilled. The form of expressions used by Pope Paul VI made the convening of an Eucuмenical Council pointless.
Furthermore, none of the Vatican II texts containing errors have been signed by all the Bishops. You are wrong to claim that the whole Episcopate teaches these errors.
God has preserved His Church unto our days, and He will continue to do so. As I have already said, reform (which will include the extirpation of heresy) will come, and those who deny that it is possible are saying that the arm of God is too short, which is a blasphemy.
And it is not true that you Sedevacantists are the reason why the old Mass still exists within the Church. God does not need you to preserve the authentic Roman liturgical traditions.