No, canonization is part of the teaching authority (not merely a legal thing) ... which is why it is said to be infallible.
Which is why the privationist stance makes more sense, because Frank is not formally the Vicar of Christ, thus his "canonizing" people can only be valid, since the material act is there from a material "pope", if the person is truly a saint in the Eyes of God.
Plus, how would you sort out after the fact which were legit and which weren't?
If, or when, God removes the eclipse of the Church, and He restores the formal Vicar of Christ, he can rule which canonizations were legit and which weren't.
Btw, I didn't vote down your comment.