Did The Second Vatican Council Ruin Everything?

There's an amorphous faction in the Catholic Church that's often called "traditionalist" that often embraces themes like more comprehensive restoration of the Latin mass, as well as less common and more extreme beliefs like sedevacantism, the view that the Holy See has been vacant since the death of Pius XII. Even if many traditionalists aren't formal sedevacantists, there's a more widespread view that Pope Francis is a heretic. In most cases, although there doesn't seem to be a single, unifying traditionalist manifesto, the view seems to be that Vatican II represented a preemptive surrender to modernism, and a return to a single mass rite in Latin, including the Roman Canon, is the cure. (If anyone can refer me to something that might effectively summarize this set of beliefs, I'll be delighted to hear of it and pass it on.) My impression is that many traditionalists are too young to have lived throuh the 1960s, when the Second Council took place,...