“So if the Mormons say they believe in the God of Abraham, do you think they worship the same God as the one elucidated by the Nicene and Athanasian creeds?”
I think they think they do. As a Catholic, however, we do not consider them to be Christian because they do not accept the Nicene Creed in any proper sense. Thus, we do not accept their baptism as valid because it isn’t truly Trinitarian in nature or intent. Having said that, I would not hesitate to say that they PROFESS to believe in the God of Abraham. So do Jews. So do Muslims. So do all Christians.
“All it takes is a label?”
I have no idea what you mean.
“Content doesn’t matter?”
It does matter. It also matters what they PROFESS to believe. If they profess to believe in Jesus I am not going to say they don’t profess to believe in Jesus.
“Slap an Apple label on a Dell computer and you’ve got an Apple? Really?”
No, so why are you even suggesting it by way of question since nothing I said even remotely suggested that?
All this back and forth over the word "profess" is completely missing the point made back over two hundred posts ago. Yes, Muslims "profess" to believe in the God of Abraham - no one has denied that - but the real problem in agreeing with the Roman Catholic Catechism's statement is not that part but the phrase, "Together with us they adore the one, merciful God, mankind’s judge on the last day.".
The Catechism goes on to say, "The Church regards with esteem also the Moslems. They adore the one God, living and subsisting in Himself; merciful and all-powerful, the Creator of heaven and earth, who has spoken to men; they take pains to submit wholeheartedly to even his inscrutable decrees, just as Abraham, with whom the faith of Islam takes pleasure in linking itself, submitted to God."
The objection all along has NOT been about who Muslims "profess" to believe in but that the RCC regards Muslims with "esteem" and agrees that Catholics worship the same god as they do. Until this error is dealt with, we could continue to play semantic games and NEVER get to the point. Christians DO NOT worship the same god as Muslims, no matter who they profess him to be. The false god, Allah, is NOT Jehovah, the God of Abraham, Isaac and Jacob - the only true God.