This is your own theory which ignores the metzius, nothing to do with R Kallus.
Look, you have no understanding of Rav Kallus's reasoning since you equate it with a treif lung found. The way I understand his argument is that we don't change the הנהגה of רוב which gave us the earlier psak for each individual, only when we "see" a ריעותא קמן which then we have to recalibrate that for the new תערובות which now contains a ודאי איסורא we saw with our eyes. As long we don't see a treif lung or any other ריעותא קמן, even if the statistic would force upon us such a metzuis, it's still not enough to force us to revoke the earlier psak of רוב.