My only comment at this point is that when people start attacking a man of Lefebvre’s stature and doctrinal acuмen, I start checking out. 
So +ABL is infallible? We’re not discussing his doctrinal beliefs but his misapplication of theological principles to practical situations.
Secondly, I’ve questioned +ABL twice now and you answered the first time, but you won’t answer the second time? Is this like your stance on the new mass? You can go once, but not twice?
Can one go to the new mass once a week, or is that too much? Once a month? Every six weeks? If they go to different “priests” does the count go back to zero? Do weddings/funerals count as their “once a week”? What if i “don’t participate” - could I go everyday?
What if Mary FEELS that Fr Smith’s masses “help her Faith” but Sue FEELS the opposite? What if Sue FEELS that a charismatic “mass” helps her to FEEL closer to God? Who’s right? Does it matter? Are we to interpret the mass as +W and +ABL counseled, on a personal level? Is Catholicism/truth judged personally, and is it different for each individual?
Of course not! This is why +ABL and +W (and the entire SSPX) are wrong on the new mass. It’s why the sspx will make a deal with Rome. It’s why the resistance is (seemingly) mired in theological mud, spinning their wheels, gaining no traction against Modernism because their stance against it is as firm as wet clay.
Yes, they are providing the sacraments, yes they are helping people have mass, but are they keeping alive THE FAITH? The Modernists figured out that they could get ”indult Trads” to trade their Faith for the mass, by giving them the indult in exchange for accepting a new faith from V2/new mass. Eventually, the Modernists can take away the indult because once the Faith has been corrupted, the “indult Trads” won’t notice.
If the resistance (+W) is following the same theological thinking as the sspx (+ABL) and the neo-sspx (+Fellay’s logical conclusions from +ABL’s stance), what’s to stop the resistance from making a deal with new-Rome? If the new mass can be attended “sometimes” then why shouldn’t the resistance go with Rome? What are they “resisting”? It’s quite hazy.