No matter how bad or worse the situation with Pope Francis gets, I don't believe that it justifies the sedevacantist or sedeprivationist position. I don't think that +ABL would have accepted either position in light of Pope Francis' words and deeds.
+ABL did not see the problem of the post-conciliar popes in the same light AT ALL, as the sedevacantists and sedeprivationists. He did not care about such things as internal and external forums. And he did not constantly accuse the popes of heresy. Error, yes; heresy; no.
He did not want to develop a schismatic mentality, and that's one of the main reasons, IMO, that he remained attached to the Pope. +ABL understood Modernism. He understood that the post-conciliar Popes were infused with Modernism. But still, he did not want to detach himself from the Popes, no matter how crazy they got. And JP2 did a lot of crazy things that upset +ABL. But +ABL still did not adopt any view that the sedevacantists or sedeprivationists have adopted. He would never have cut himself off from the Popes, no matter what. He just did not think in those terms at all. He was French, not American (thank goodness).