Traditionalists don't question the right of the pope and bishops to call a council into session. That is not the issue.I see you knocked over a straw man.
--ultima ratio
The issue is whether its declarations--which were not binding and not infallible--were consistent with past Magisterial teachings.You are really saying Vatican I and the Council of Trent were "not binding and not infallible," according to Cardinal Ratzinger, since "Vatican II is upheld by the same authority as Vatican I and the Council of Trent."
--ultima ratioVatican II is upheld by the same authority as Vatican I and the Council of Trent, namely, the Pope and the College of Bishops in communion with him ...
--Joseph Cardinal Ratzinger
I will leave you to ponder two items. First, the remark of Eck in his debate against Luther at Leipzig, after Luther admitted he believed an ecumenical council was fallible:
"If you believe a legitimately assembled council can err and has erred, then you are to me as a heathen and publican."Second:
Between heresy and schism there is this difference, that heresy perverts dogma, while schism, by rebellion against the bishop, separates from the Church. Nevertheless there is no schism which does not trump up a heresy to justify its departure from the Church.
--St. Jerome