The Captain's on to something.
Revisionism in publishing has a long, "Red" history.
The only way to be sure is to hunt down original copies of whatever you are looking for, from before the Council, at the least, and more preferably when possible, from before the XXth Century.
It truly is just that bad.
TAN, by the way, was bought up by a prot several years ago after Nelson went into or just short of bankruptcy. What I read of the deal, the new guy agreed to not impose his heretical views on TAN products but there are any number of indications that TAN was "revising' older titles anyway before the deal. There were reports, like the one above, of more "controversial" lines being modified or removed from earlier, more polemically accurate editions.
I do not know if that is true or, if so, how much revision may have occurred.
Nelson seemed to be a square shooter and a serious Catholic publisher but I do know he put his own hand to "editing" "Liberalism Is a Sin" but only to the extent of rewording several passages to make them apply to America in the late XXth Century.