I think you’re half way to a perspective not reliant on 2010s Reddit atheist cliches (and the implicit western chauvinism within). We agree that religion absolutely is an instrument of class domination and always has a class character. During the Russian Revolution the church was persecuted by the bolsheviks because it was an instrument of Tsarist autocracy that ordained the oppression of the serfs, peasants, and workers. But how about liberation theology in Latin America? The exact counterpoint. We should talk about institutions rather than religions, because is Islam intrinsically this?

No, it’s something the US, Saudi, gulf regimes and Zionist entity promoted as a bulwark against Arab nationalism and Arab socialism. Religion remains a key social force in most of the world, and this intrinsic inarguable position that ignores the social forces at play won’t due.
