Yes, if you read the article I posted, Fesser makes very clear that this does not mean anyone who says they worship something called God, even if they are monotheistic, are worshipping the same God. In particular, he makes the case that Mormons do not worship the same God as we do, but a false God. This is not because of their false notion of a Trinity, as much as their false notion of a Trinity leads them to conclude that God is essentially different than our God. Their God is " creaturely and finite , something which lacks the absolute metaphysical ultimacy that is definitive of God in Catholic theology". Mormans are essentially pagan.