[Legatus]

Now aren’t Catholics obligated to obey and agree with the Catechism that says that muslims and Catholics worship the same god?

No, because paragraph 841 runs counter to (and you're gonna love this) Tradition. The CCC English translation had to be corrected as regards homosexuals already, the correction on what god muslims worship will come eventually... probably after the sacking of Rome, but still.

[piusv]

But Legatus paragraph 841 comes directly from the Vatican II documents. This is not just a translation issue.