That stands to reason. The parents who came to the UK from their turd-world hellholes tend to be more grateful, because they know what the alternative is. Their offspring don't have that appreciation and therefore, they are much more susceptible to radicalization.
Take, for example, an Italian or a Chinese immigrant family. The parents hold on to the old ways quite a bit. Their children less so. And their grandchildren not at all. The grandchildren are fully assimilated.
This is simply not happening with many Muslim immigrant families. And the West refuses to admit it.