My Celtic and Germanic ancestors used to burn captured Roman soldiers alive in wicker cages. They gave that up when they converted to Christianity. Sounds like Islam took the Arabs in the opposite direction.
My Roman ancestors crucified Germanics & Celtics during that same age.
They, likewise gave it up upon converting to Christianity.
As you say....Arabs went in the opposite direction.
God describes Arabs in Genesis 16:12—sounds like they haven’t changed.