Simple. Francis and the whole Church by this dubia have been publicly shown that Francis is propagating serious moral errors in the lives of the laity. When the time comes it will be much simpler for the proper ecclesiastical authorities to denounce, anathemize, and excommunicate him and declare him an anti-pope.
Those who seem to be invincible today are but human debris in hell in the future.
If this was describing the "formal correction" that Burke promised and never delivered on, I
might say you had a point with the bolded part. I
might.
As for the rest? I agree with TKGS. If you think that there are any "proper" (ie. Catholic) ecclesiastical authorities in Rome that will actually declare him an anti-pope, you are living in a fantasy world.