Back 2012 that is exactly what the SSPX justified to do. "Vatican2 is 95% good" - +Fellay.
Yes I know. I remember it well. I'm speaking from the vantage point as if 2012 did not happen. Bishop Fellay is no longer in charge, and I can only hope Fr. Pagliarani believes differently than the bishop did at that time. I can also hope and (to a certain point) assume that Bishop Fellay rejects the council, or he would not be willing to consecrate bishops against the will of the Pope.