To flat out reject it as an opinion COULD be considered rash, temerious.
BUT there are REASONS people are confused about this. (hint) IT HAS TO DO WITH THE CRISIS IN THE CHURCH AND CHURCH MEMBERSHIP!
Nobody needs you telling them they will burn in hell because they don't hold BOD at the same level of theological note that either you or St. Alphonsus did.
This ISN'T EVEN REMOTELY similar to the arguments of the SVs which are made to DEFEND dogmas.
Why were the BOD opinions developed as a theological opinion in the first place - go look it up.
Books give objective truth. People won't go to hell....they just need to change their stance accordingly.
A step down from "de fide" is mortal sin, yet THE CHURCH approved of St. Alphonsus saying it was "de fide". Priests since then in the confessional everywhere told penitents it was a mortal sin. This truth changes lives for the good!