Of course, this doesn't follow, and is another straw man - not very useful for the purposes of constructive dialogue. All that is necessary to believe for salvation is to be found in the confines of the written words of the Bible alone. But the Church does require its members to interpret the Bible according to received, Catholic Tradition. The Catholic commentator is bound to adhere to the interpretation of texts which the Church has defined either expressly or implicitly. The number of these texts is small, so that the commentator can easily avoid any transgression of this principle .
Protestants do exactly the same thing, just in a more limited manner.
If the whole truth be known, I suspect that Protestants are more guilty of the practices decried above than the Catholic Church ever was. The Catholic Church is much more concerned about true doctrine, received from the Apostles, than about particular proof texts. The author of Scripture is also the creator of language. Furthermore, as the omniscient God who chose to reveal himself and his will to man, he knew thoroughly all the rules of the language-game. God is not a cheater.