Re: If Islam is such a great religion, why did we fail to produce great muslims
You are correct.
in post1 except for Theresa, the others were civil rights people. Mandela Gandhi King ( who was a Gandhian). Though King was a reverend, his emphasis is on civil rights. ( I hear Khan Abdul Gaffar Khan also known as Frontier Gandhi was on par with Gandhi. I would include him. Not Jinnah who was Nehrus equivalent).
Other than such leaders the ones who make impact are innovators.
Both civil rights leaders and innovators are not typically driven by religion. There aren’t confined to bounds of ONE specific religion. They don’t say my religion and my book is perfect. And other books are flawed They are bigger than that. They constantly keep learning. From ALL sources. And it shows in their output.