I agree. I never claimed it was "dogma". But not all of the Church's positions are dogma. What is taught in the Catechism counts as being "the Church's position", even if it does not have the status of dogma. And therefore this teaching about Muslims worshipping the same God as Catholics (#841 in the Catechism) should be considered the Church's position on this matter.
-A8
Islam is a syncretist religion. It took its concept of God from Judaism, along with a collection of ritual practices, and took certain already heretical conceptions of Jesus from the Christianity circulating in the Middle East at that time, and finally topped it all off with the pagan concepts, places and rituals of the Arabs.
In that sense, it can be said that what Muslims believe they believe, so to speak, is the same God as that of the Jews, that is, the God of Abraham.
Obviously, it’s a pretty tenuous relationship with the true God of Abraham, but that is what they believe, and that is why it appears in Catholic sources.
On the other hand, a reading of any good Catholic theologian, not to mention the Pope (BXVI, that is), will give you a more accurate view of the Church’s understanding of the difference between the Muslim concept of the God of Abraham and the true concept.
Not the Church's dogma (infallible), but the Church's position (potentially fallible). Gotcha. Ping for reference.