Have you read Liberalism is a Sin, Mabel? In particular, chapters 19-21?
From what you have said, it would seem you would think Fr. Felix didn't know what he was doing when he named his book Liberalism is a Sin.
The book says that it was actually published as "What is Liberalism?" in the first english edition, by someone with similar sentiments as yours i would think, since that is "non-offensive" to people.