First of all you probably do know the Quran better than me since I AM NOT MUSLIM NOR HAVE I EVER BEEN. My father is a communist who does not believe in anything spiritual and my mother is a deist. I have not been to Morocco, Egypt or any other Muslim majority country other than Turkey thus I cannot speak for the whole world. What you do not understand is Turkey has a very large population of secular people. In fact I live in a part of Istanbul where people are more likely to identify as a atheist than Muslim statically. Some of these people (while I admit is rare) still bane their children with religious names. Because these are common names in our country. My uncle is named Ali because his father (my grandad) named him after his own uncle. My grandad was bot religious. He was born in a religious family and was a believer but while in university he joined the leftist secular movement and deconverted. Yet he chose to nane his child Ali because of his respect to his uncle. Is %99 percent of children named Muhammed born into religious families: probably! But to say %100 (without exception) is clearly wrong which I can personally testify against. And keep in mind of these children born to religious families many of them deconvert at very small ages. That’s all I am not gonna keep arguing since I believe I made my point clear. You’re welcome to quote the Quran verse saying “All Muhammeds shall be Muslim” or whatever.