Archbishop Vigano can go back to the Catechism of Pope Pius X only when he avoids the common false premise

I conclude with a request to those who are profitably intervening in the debate about the Council: I would like us first and foremost to seek to proclaim salvific Truth to all men, because their and our eternal salvation depends on it; and that we only secondarily concern ourselves with the canonical and juridical implications raised by Vatican II: anathema sit or damnatio memoriae, it changes little. If the Council truly did not change anything of our Faith, then let us pick up the Catechism of Saint Pius X, return to the Missal of Saint Pius V, remain before the Tabernacle, not desert the Confessional, and practice penance and mortification with a spirit of reparation. This is whence the eternal youthfulness of the Spirit springs. And above all: let us do so in such a way that our works give solid and coherent witness to what we preach.-Archbishop Carlo Maria Vigano

https://www.lifesitenews.com/opinion/archbishop-vigano-i-do-not-think-vatican-ii-was-invalid-but-it-was-gravely-manipulated

Lionel: 

If the Council truly did not change anything of our Faith, then let us pick up the Catechism of Saint Pius X ( this can only be done when we avoid the common false premise. Now with the false premise there is a non traditional conclusion which contadicts n.24 Q, 27 Q  of the Catechism of Pope Pius X).-Lionel Andrades

http://magister.blogautore.espresso.repubblica.it/2020/06/29/archbishop-vigano-on-the-brink-of-schism-the-unheeded-lesson-of-benedict-xvi/