No, your buddy sawdust is out to lunch trying to make a false dichotomy between believing and faith. According to Rom 4:23, Gal 3:6 and Jas 2:23, Abraham didn't exercise faith. He only believed God which according to your comrade isn't the same as faith.
Faith is believing the Word of God.
Before Satan fell and created the lie, faith was the normal medium of communication between God and angels.