I think the title is too emotional for a rational analysis. If you want to discuss the issues dispassionately, make it sound neutral like Why some nations fail?
I think in Pakistan's case. though no one doubts Two nation theory as a general theory of Islamic nations, it turned out to be insufficiently cohesive to create a new successful nation. However, the relative success of Bangladesh proves other cultural factors can exercise the cohesion needed to create a successful nation (Language in case of Bangladesh?)
More importantly, the general question is, a large number of Muslim nations that are not oil exporting are in various stages of dysfunction. That should be the basis of analysis. What are the cultural factors that prevent, say, industries coming up in Muslim societies, why is there no excellence in education? Why is free speech and freedom generally suppressed, these are the issues. Because of these "infrastructure" issues, good governments have not developed in most Muslim nations.
But Pakistan can get inspiration by looking at Bangladesh, Indonesia and Malaysia. They all seem to be successful though they all have problems that any large nation will have. It is particularly instructive how Malaysia has developed with a heterogenous population with a large Muslim population. Indonesia is also an impressive story - probably among the most successful non-oil Muslim nation.