They then proceed to wrongly ascribe to him a number of qualities which make (their understanding of) him closer to a demonic slavemaster than the God of the Bible.
I believe Muzzies will be shocked, too.
However, I also believe God meant what He said when HE SAID that those who earnestly SEEK HIM, shall find Him.
Therefore, it would not surprise me that God turns out to be amazingly merciful to folks of true heart who, doing the best they knew, sought ALMIGHTY GOD in the way they were taught.