Please tell us more, at least you have knowledge on something ;) Do you have this problem yourself? Or are you looking down at your co-immigrants for that? Do you consider western countries should have a middle-ground effort?
It's hard to argue with people who have been brainwashed that everything good comes from gods who also demand all those superficial rituals and arbitrary cultural norms. Questioning their rituals throws their whole worldview and morality out the window and they aren't exactly appreciative for that.
There's also a sense of entitlement, because: "The destruction of our country is largely the responsibility of the West". This mindset is very prevalent. So instead of appreciation for being taken in, there's discontent because reality is not turning out like they imagined it to be.