You can make such a statement re Islam with a straight face? Simply because God allows evil people to flourish doesn't mean He's using them or blessing them.
God allows all forms of evil to exist, Oral Roberts' Enterprises included. It doesn't mean He has a purpose for them.
Of course I can, I don't consider allah "God"
Muslims may consider allah to be a monotheistic "god" but the attributes of allah as outlined in the koran do not remotely resemble the monotheistic "God" of the Jews and Christians.
Just so you understand, that is not a Biblical concept, God is omnipresence and omnipotent. He knows everyone from conception, He just doesn't force his will upon them.