A more sane explanation is that Quran was hastily assembled into a book by some military leaders who saw disorder among the ranks.
These guys plagiarized the Bible (which in turn was plagiarized from the Egyptian texts) and added few mistakes of their own in the process.
There is certainly reason to believe that historically many religions were often formed twisted and warped little more then gross political tools. Nothing has the power to cement control like a bad religion.
I read a study a while back that highlighted the fact that pagan priests and rulers who sanctioned human sacrifice may have had such motives. The analysis of more than seven dozen Austronesian cultures revealed that the practice of human sacrifices tended to make societies increasingly less egalitarian and eventually gave rise to strict, inherited class systems. The ritual killings helped keep the powerful in power and everyone else in check. I discussed this more here:
Pagans and Human Sacrifice.
But is this the entire story or is this simply a manifestation of the human capacity to twist, lie, manipulate and corrupt for power. Are all religious velvet gloves hiding the iron fist of tyranny underneath or is there is something deeper to some of them?
To help make that determination we need to look at religions with a critical eye understanding the historical landscape in which they arose.
The more religions act like political systems favoring control of the powerful over the meek the more suspect we should be. When a religion does the opposite of that when it facilitates the rise of freedom or favors the powerless over the powerful we have something of a conundrum. How could such a belief survive and form when it opposes the powerful? Such inconsistencies warrant further evaluation.
For what it's worth I am firmly in the camp that there is something fundamental and deep in at least some religions.
Very true. Almost all religions (maybe with an exception of Buddism and Jainism) formed as political systems to rule over people.
God or other supernatural (entities) were conveniently used as no one to this day can prove or disprove their existence. We have no evidence that any God (of any kind) exists, but we also have evidence that
all religious texts contain scientific mistakes and flat-out historical errors.
What is more powerful than any human king? A supernatural Superman (aka God) who can do whatever he wants and squish any disbeliever like an ant. This idea was hard to refute in times when those religions were invented.
Fear and reward in the afterlife worked so well that some rulers (like Mohammad and his military commanders) wanted their own version.
If today, some prophet (or political figure) came out with a book that claims his supernatural revelations are from God, he might sell few thousand on Amazon, but generally, people will say: "Nah, we have heard this before, you are a scam artist or you lost your mind". There are many books on Amazon about supernatural, after-death experiences, UFOs, aliens among us etc.
Today, people just know better. Religions exist today only because our parents force us to believe in them at a risk of losing relationships with our family and friends.