Is the Church of Jesus fallible? SSPX says so. So that would make it a bunch of hooey, whether they change “back” to the SSPX “plan” or stay in supposed “error”. That’s some monumental pride in camels hair the SSPX is holding, it seems to me. The pope seems downright begging the kid to come back in for dinner before he catches cold (or hot). (We all know how that can happen to men).
Is the Church of Jesus fallible? SSPX says so.
It seems to me that the other side of this discussion also says this. Vatican II either upheld the eternal Catholic faith, or it changed it. If it didn't change anything then there seems no way a traditionalist could be in error for believing as he does. On the other hand, if one holding the pre-Vatican II faith is in fact in error then there can be no denying that that council did change the faith. And you can't change the faith unless you first insist that what has been believed up to that time has in fact been wrong. Wrong cannot be other than an admission of fallibility.
This is why I find this whole situation both interesting and troubling. If Vatican II is seen as a part of the entire life of the Church then it should be interpreted as such, which means seeing its provisions as lying within the faith which existed then, and not as an introduction of a new faith. I am hopeful that whatever happens with the SSPX that we can begin seeing VII interpreted as a Catholic council rather than as a new religion being built on the ruins of that one, which is effectively how it has been viewed by most up to this time.