Okay:
In Christianity, Catholics and Protestants consider each other atheists. Each sub sect that isn't as big as that two STILL considers all the other sects functionally atheists and heathens. There are Christian churches that do not even do baptism as a ritual.
In Judiasm, there's Reform and Orthodox, and subsects.
Islam is split the same way.
And of all 3 of those, there a lot of people that are just 'culturally' that religion, ie they grew up in it but mostly nap in the back of the oom and put up with it because that's what makes life easier, but they don't completely leave the social circle either.
The idea that all Muslims interpret and follow Islam the same way is bullshit fed to you by dickstilts like Richard Dawkins. like, straight up 5 minutes of googling will show you the sunni/shiite split already indicating to someone that Islam isn't any more capable of lockstep agreement than anyone else. Every christian sect also thinks their interpretation and wording is the literal one. The Quran being officially only in Arabic doesn't even prevent reinterpretation because Arabic has also changed a bit over the centuries.
What would be more accurate is that the issue is with the wahhabist sect - roughly the equivalent of the KKK movement here in the US and Europe except they've successfully become the government and held it. They consider every non-wahhabist Muslism an apostate much like the KKK did for Catholics.
Either way, unless one is ever going to follow up the "problem with Islam" with what they want to say how they're going to solve it.. our problem is not the religion of Islam. The problem is kookoo nutbar criminals have access to the Amazon River of Guns here in our country.
Again you are basing your analogy as if Islam /Quran is viewed same way as Christians do bible and the denominations shape up with reasoning based on path that Christianity did.
Before I tackle that point , no I don't need Richard Dawkins , I was raised a devout Muslim in a Muslim country with Islamic mandatory studies through grade equivalent of 1 to 10. While learnning private lessons in memorizing Quran
Back to the question of why Islam and Quran has a unique problem. And then I'll bring it with cultural Muslim that stays in back row and thinking about how he will feed his family.
We know they are many authors of Old Testament , we know New Testament gospel are word of 4 account of Jesus life , we gospel themself contradicts with some details within each other, we know Paul wrote many books , we know Paul challenge Old Testament and the law. There is huge diversity in the bible. Many authors , contradictions, abrogation , etc
None of that absolutely none of that exist in Quran . It's one man word . Not many authors . It's one man , who revealed the message for God . That is right there differentiate with bible diversity
Hadith , which are actually like the gospels . Meaning , they are account of prophet Moe everyday life . Here just like gospels we have many authors, and wouldn't you know it this is where we find lots of diversity. So to keep it simple both Sunni/Shia both have that one Quran but give different Hadith preferences . But , even in this diversity , the source is still the same man Moe
So no matter what happens, every school of thought goes back to Quran for final validation. What Quran does have in common with Old Testament is that it's not just a spritual guide but also book of rules of how to live everyday life in what to eat , who to marry , how much inheritance for women , how many witnesses ect. All of that which is ignored by the Christian in Old Testament because of its diversity that Paul bought to cut old law, doesn't exist in Islam . There is nothing within Islam to challenge it. It's a horrid circle.
Even then if you can't see the obviousness I can't help it. Of course there is diversity among Muslims, cultural sure , some don't even believe in God but still say they are Muslim . But I am not talking about outliers , even the guy who is in back with his head down during Friday sermon will beat the shit out of his daughter or son if they tell him they are homosexual
You think Wahhabism is KKK . You can't be more wrong.
Please watch the video below
https://youtu.be/pSPvnFDDQHk
This isn't just USA problem. It's a Muslim world problem