Bottom line for my position:
Sedevacantists are correct in stating that R&R have a warped, even non-Catholic, view of and attitude towards the Magisterium and the Universal Discipline of the Church, essentially having these defect. They reduce the authority of the Magisterium and infallibility to a mere tautology: it's infallible it it's true and non-infallible if it's wrong.
R&R are correct in the criticism of sedevacantism that it simply cannot be left up to individual Catholics, shooting from the hip, to consider popes they don't agree with deposed. They are also correct that maintstream sedevacantism leads to an ecclesiavacantist situation and defection of the hierarchy.
It's precisely because I see the legitimacy of these arguments that I find the Father Chazal position and the sedeprivationist positions to be most Catholic. Now, the only other alternative I see is just to fully accept the NO hierarchy, apply a hermeneutic of continuity to the V2 teachings, go to an Eastern or Tridentine liturgy due to personal preference, and argue against the abuses in the NOM.