It's really funny to see this canard, too, since I found out about this commentary well before ever becoming Catholic. In fact, it was in the library at the college I attended along with other Protestant commentaries.
As I understand it, the entire set is being reprinted in English in a leather bound set and the portions related to he NT have usually been in print for the past hundred years. The portion related to the four Gospels, for example, is available as a set for about $150 on Amazon and I've been told they're available for considerably less in paperback.
Availble in paperback and as free ebooks
At the time I plucked this link, available in "56 formats and editions" on Amazon.
Given that you can get them for free on the web as a text or .pdf download (along with, I think, all the rest), I doubt there are many sets sold other than to parish libraries, seminaries, and so on.
Even in the Internet age, there truly are none so blind as those who will not see.
Let the dog and pony show about whether it's "official" or only "officially approved of" begin. But whatever you call it, if it's in there, it's acceptable to the Magisterium of the Church as is everything in "Haydock's Notes" on the Douy-Rheims Bible (also available in a number of formats as well as free to download or read on-line).
They are blind. Worst of all - they want to be.
Do you know the history of the Church of Rome? What she has done to innocent people down through the centuries? Look at what’s been swept under the carpet. It’s that lump the size of an elephant in the middle of the room.
Link not working.