Actually, whether any of the Conciliar popes are/were popes or not is not merely a matter of opinion. They either are popes or they are not popes. It matters not what your opinion is. If you think they are/were popes and they are/were NOT, your opinion is wrong. If you think they are/were NOT popes and they are/were popes, again, your opinion is wrong. Period.
However, none of us on CathInfo have the authority to bind another's conscience on the matter. I, personally, am convinced that all of the Conciliar popes (though I am not sure in the case of John 23) have defected from the faith, are/were heretics, and were not popes. In the case of Paul 6, if he was pope when he was elected, he certainly lost the papacy when he signed certain docuмents at Vatican 2. The rest were heretics before their election and never gained the papacy to begin with.
On the other hand, those who do not share my belief on the matter are still fully Catholic provided that they reject the heresies routinely taught by the Conciliar sect.
What I simply don't understand is how anyone can say that Bergoglio, for example, is clearly a heretic but retains the papacy. I don't think that those people are outside the Church for that reason, but if they want to clearly see what "diabolical disorientation" is, they need only to look in the mirror.