The principle should be examined on its own merits.
I agree with this. Basically, my position is that Trent is neither teaching nor condemning the notion of BoD. So, the Doctors who believed in BoD held that people cannot be saved "WITHOUT" the Sacrament, but rather that they can receive it
in voto. This is why after Trent, St. Robert was very careful to avoid saying that they can be saved without it, but instead say that they (catechumens only) could in theory have a different mode of receiving the Sacrament.
Now, examining BoD in principle, it's CLEAR that it's nothing but speculation, and there's no evidence that it was revealed. Majority of the Church Fathers rejected it, and no one has ever demonstrated how / why it logically and necessarily follows from other revealed dogma. Without one of these two criteria, unanimous consensus or necessary implicit logical derivation, there's no evidence of it having been revealed, and so it remains squarely in the realm of speculation.
Theologian after theologin after theologian merely GRATUITOUSLY CLAIM that such a thing exists, but it's never been proven. Contrary to the opinion held by the Dimonds, however, it's also never been condemned, and has been clearly permitted by the Church. I think that was a mistake, but a mistake allowed by God because without BoD there could never have been a Vatican II, the entire foundation of which is the new ecclesiology.