Here is an important point:
If it could happen to the Catholic Church in 1969, it can certainly happen to the "traditional Catholic" movement.
Considering that traditional Catholics are like a branch hastily cut off a burning orange tree, and re-potted so that the family won't be completely without oranges...
If someone could torch an entire orange tree, what makes you think they couldn't take a single axe-stroke to that young orange sapling? It's really much more vulnerable than the original (mature, 10-year-old) tree.
Matthew