I already explained that the theology is flawed. Have you ever learned a foreign language?
One of the central doctrines of Islam, as presented in the Koran, is that their Allah does not have a son.
The Koran even states in Sura 9:30 that those that believe Allah has a son should be destroyed by Allah.
-2- The Koran says the Lord Jesus did not die on the cross. : Sura 4.157.
-3- Allah of Islam is at war with the Bible as the Koran calls anyone believing in the blessed Trinity a liar.