Actually, they do, and there's no doubt about it.
As is often the case with church teachings that modern people don't accept anymore, the official teachings of the church have been fudged or covered with double talk so that the church can say both that she never changes any doctrines AND ALSO that she doesn't really teach what people have long known that she does teach.
Purgatory is a good example. No Catholic today wants to believe what every Catholic was taught for the previous 500 or so years, so this 'place' that is supposed to be as bad as Hell and might last, for the individual sent there, until the end of time...has gradually been morphed into what is called the "celestial washroom." That is to say, no purging in Purgatory but just a quick re-orientation session. Or, take the Sacrifice of the Mass. Nowadays the sacrifice, which was called by that word throughout RC history is said to be just a "re-presentation" of the one sacrifice of the Cross (as though simply referring to a previous sacrifice ever availed anything to any people who offered sacrifices, OT Hebrews included, in the absence of a new victim to sacrifice).
As for the link you gave, there the same double talk is employed in the face of mounting skepticism about this particular doctrine. However, we can see that the denial of the Faith + Works teaching is followed by a concession to the truth--
"Catholic theology refers to this growth in righteousness using the term justification, so, in Catholic language, justification isn’t something that happens just at the beginning of the Christian life. It happens over the course of the Christian life."
Translation: If you have Faith, you must also do good Works, in order to acquire Grace sufficient to be saved. If you sin, you lose the Grace and must go to Confession in order to get straight again, because otherwise you'd die in your sins, even if you'd accepted Christ as Lord and Savior and been baptized. Faith and Works are effective, in other words, and essential. To a reformed Christian, as we know, Faith justifies (as the Bible teaches) and Works are a necessary consequence of a living Faith, but they do not alter or enhance our chances of salvation in themselves.