> Especially the second generation, which is often more radicalized. <
Many studies have shown that to be true (see link below for one such study). So assimilation just ain’t gonna happen.
https://metro.co.uk/2007/01/28/young-muslims-are-more-radical-11687/
The second generation will see that they were born and raised in Sweden, and yet are unable to qualify for good jobs.
They are unwilling to consider that the fault is with their culture or (worse) their genetics, so the answer must be MORE ISLAM.