Here is Tony La Rosa's argument objecting to being classified as a "Sedevacantist" if Pope Benidict dies before Jorge:
"The term “Sedevacantist” did not exist before Vatican II. It is a term applied to those who hold that the Chair of St. Peter has been vacant since 1958 due to the alleged heresies of the conciliar popes. If Benedict XVI dies first, I will not automatically become a “Sedevacantist”, the term as applied above. Furthermore, even if Jorge Bergoglio was a saintly man, he would still be an antipope because he was invalidly elected. Therefore, I don’t need the argument of “heresy” to defend my position. If Benedict XVI dies, we will simply be in a period of “sedevacante”, as we were between the reigns of Pope Pius X and Pope Benedict XV. If Jorge Bergoglio dies first, will those who accept him as pope become “Sedevacantists”?"
I Will Not Turn into a Sedevacantist if Benedict XVI Dies before Jorge Bergoglio – Ecclesia Militans
Thus, he is correct; if the term "Sedevacanstist" is restricted to those who believe the Chair of Peter is vacant since the death of Pius XII. Then in that case, those who hold Pope Benedict as the current Pope will not be considered Sedevacantist.
This is hilarious.
According to Mr. LaRosa, Ibranyi (who believes the last 102 pope have been antipopes) would not qualify as a sedevacantist either.
Nor would those who believe John XXIII was a true pope, but Paul VI through Francis weren’t, be considered sedevacantists.
Only those who say the chair has been empty since 1958 qualify (much to the chagrin of those who identify as sedevacantists with other start dates).
Sounds to me like Mr. LaRosa is having difficulty coming to terms with the inevitable logic of his position:
If you believe the man claiming to be pope is an antipope, and furthermore, that nobody else is currently pope, you are by definition sedevacantist (as every sedevacantist will attest).
That various sedevacantists have different start dates for their alleged “interregnums” is an entirely irrelevant detail.