Saying educated Muslims can integrate tells us nothing, since education = Aristotelianism = Europeanism. And all (scientifically) educated people in the world can ~integrate. The problem is that more than half of the Muslim world is < 85 and both ineducable and unemployable here.
So a population od <95s favor ingroup over outgroup signals and status and don’t integrate, and <85s are the vast majority, you have enormous outgroup incentive because they are ineducable, unemployable, outside the status system, and a permanent underclass, w/o integration.