Calling the Conciliar Church a non-Catholic sect simpliciter is the problem here, along with the inability to make distinctions.
People who can't understand the notion of a distinction or what it means fall into this rut of the false dilemma.
Conciliar Church as Conciliar Church is a non-Catholic entity, but the problem is that there are still Catholics there, many of them holding jurisdiction in continuity with the pre-Vatican II Church. While nearly all are in at least material error, there are still a number of Catholic bishops who are not pertinacious heretics, and their errors do not rise to the level of heresy, which alone would exclude them from membership in the Church. Most of these types are the Eastern Rite bishops, and they also still have valid Holy Orders there.
Of course, it's somewhat debated whether all the Church's bishops receive jurisdiction immediately from Christ vs. whether it's only through the Pope and the papacy, and how one falls in this issue would determine whether Totalism is viable.
If you believe that jursidiction comes only from the Pope, then this jurisdiction cease during every interregnum, so in that case there's no new problem here with Totalism.