I suppose, then, that you will help matters out by explaining my confusion.
Let’s simplify the situation…
The crucial question is whether the God of islam is the same God as the God of Christianity.
You say that I confuse the question of, What God? with the question of, What is said about God?
Explain to me how the What God? question is to be answered vis a vis Islam without first answering the question of What Islam says about God?
In order to know anything about the God of Islam, it seems absolutely necessary to ask what is said about God by Islam.
Ergo, the What God? question depends ENTIRELY upon the What is said about God by Islam? question.
I don’t see how you can answer the first question without first answering the second, unless you want to unilaterally impose upon Islam the answer to the What God? question by completely circumventing what Islam has to say about its God.
In that case, you can insist that the question of What God? has nothing to do with the question of What is said about God? by Islam.
According to you, then, what Islam has to say about God is completely irrelevant to the question of what God Islam believes in. Peculiar position you have put yourself in, no? You are completely removing the believer (Islam) from what is believed by that believer (Islam) by imposing upon that believer (Islam) your concept of God from the get-go.
Yes, I can see why you suppose I am the one engaging a false premise. Your presupposition is rock-solid and immune to critique even by Islamic believers themselves. They must necessarily believe in the same God as Christians because you have arranged the whole thing that way from the start.
That would be why you are absolutely certain about the God of Islam because you have unilaterally imposed your conception of God upon Islam. Ergo, what Islam has to say about the God of its belief system has nothing to do with what the God is that Islam actually believes in, since you are supplying their God to them a priori and holus-bolus with no need to wait for any input from Islam, itself.
Way to do other people’s thinking for them! That way you can’t possibly be wrong, since they necessarily have to agree with you.