The communist part was a metaphor... https://en.wikipedia.org/wiki/Sedevacantism Sedevacantism is a doctrinal position within traditionalist Catholicism[1][2] which holds that the present occupier of the Holy See is not a valid pope due to the pope's espousal of one or more heresies and that therefore, for lack of a valid pope, the See of Rome is vacant. The term sedevacantism is derived from the Latin phrase sede vacante, which means "with the chair [i.e. of the Bishop of Rome] being vacant".[3] The phrase is commonly used to refer specifically to a vacancy of the Holy See from the death, the resignation, the falling into insanity, or the public heresy of a pope to the election of his successor. Among those who maintain that the see of Rome, occupied by what they declare to be an illegitimate pope, was really vacant, some have chosen an alternative pope of their own, thereby in their view ending the vacancy of the see; such are known sometimes as conclavists.[4] The number of sedevacantists is unknown and difficult to measure; estimates range from tens of thousands to hundreds of thousands.[5] https://en.wikipedia.org/wiki/Sedeprivationism Sedeprivationism is a doctrinal position within Traditionalist Catholicism which holds that the current occupant of the Holy See is a duly-elected pope, but lacks the authority and ability to teach or to govern unless he recants the changes brought by the Second Vatican Council.[1] The doctrine asserts that since this council, occupants of the See of Peter are popes materialiter sed non formaliter, that is "materially but not formally". As such, sedeprivationists teach that Pope John XXIII, Pope Paul VI, Pope John Paul I, Pope John Paul II, and Pope Benedict XVI have not attained fullness of the papacy.[2] Sedeprivationism is held by some traditionalist Catholic groups such as the Istituto Mater Boni Consilii and Orthodox Roman Catholic Movement, among others. The doctrine of Sedeprivationism traces its origin to the Thesis of Cassiciacum of the Dominican Catholic theologian Michel-Louis Guérard des Lauriers.[3] https://pic8.co/sh/AE9uju.jpeg