Mater, I suspect that those who are accepting Ambrose are doing so either at face value (no pun intended because it's not his real face, is it) or simply because he enjoys the endorsement of Fr Pfeiffer and Fr Hewko. This second factor is so inverted--since when do bishops derive their authority from priests?
I think you hit the nail on the head here.
You have to understand the pathology (that's what it is) of this cult mentality.
Equally bizarre is a man who won't attend a Mass until Fr. Pfeiffer approves it. And if Fr. Pfeiffer doesn't give his approval, it doesn't matter HOW Catholic it is, how much the priest in question preaches against Vatican II and modernism, the man won't go to his Mass, purely because Fr. Pfeiffer didn't give his approval.
If someone can be that irrational and brainwashed like a typical cult member, then they can accept a con man like Ambrose as a bishop. It doesn't matter what Fr. Pfeiffer says. What he says is the truth. It doesn't matter what that pesky "reality" tries to interject. Just ignore him -- he's a "hater" and we're persecuted, because we're the true remnant, yadda yadda.