I think that Mr. Auster is a little optimistic.
I went to school with an Egyptian Muslim. While he assimilated, his 2 brothers and sisters did not. I believe that one sister is back in Egypt. Her husband was arrested as a member of Gamat Al-Islamya. The rest are members of the Muslim brotherhood or associated orgs.
"he is speaking of EUROPEAN Muslims"
What are "EUROPEAN Muslims"? Again I say, if he's speaking of Arab Wahabbists in europe, then make that distinction.
I'm sure he's aware there are different muslim sects. Wahabbists (who are a minority sect and who are regarded as a cult by other muslims) do not assimilate and I assume this is to whom he's referring.
But if he doesn't want to sound like he's condemning all muslims (which, I believe, may be a big part of why his article was pulled, then he should choose his words more carefully. ( as with the Bush statement of Pres. Bush doing "nothing", that I referred to previously).