Again, Moral certainty isn't dogma.
Let me ask this, if you will be so kind as to answer, "Are you morally certain either way if the current man claiming to be Pope is actually the Pope?
You learn well. Those are my words. "Moral certainty is not dogma".
I have enough moral certainty to act as I need to, yes. But again, all I need to do is go to Mass, believe and practice the Catholic Faith as it was always believed and practiced, and avoid the contagion of Vatican II and the Conciliar Church.
I'm doing all those things, without "sedevacantism". So apparently it isn't necessary. C'est la vie.
Moral certainty just means "enough clarity for ME to act on, to make a decision on." And I'm morally certain there is a Crisis in the Church, and that the post-V2 Popes can't be obeyed as they overstep their authority and attempt to start a literal new religion. Vatican II has proven to be destructive of the Faith, and of souls.
Now you want to get all philosophical and ask, "WHY would God allow this?", "HOW could the Pope promote a liturgy that is noxious to souls?" I'm going to have to respond "I don't know" because I have no friggin idea.
Ask God if you must demand an answer. It wasn't my idea, nor is it "my problem". My only "problem" or job is to save my soul, and those of my family, during this Crisis. Everything else is an extra, or even a distraction.
The difference between the status of the Pope and the shape of the earth, is that the latter CAN BE determined. Which is quite refreshing, I might add! Because I'm quite sick of the Pope issue, which has no definitive answer. Still waiting for God's big "reveal" on that one, to sort everything out. In the meantime, we wait, watch and pray (and keep the Faith).