So you're dismissing the possibility that Dutch Society (or other parts of Europe with high %'s of Muslim immigration, like France) could some day be 'balkanized'? It's hard to have a discussion with someone who only wants to wear rose-colored glasses too.
Nothing happens overnight. If Dutch society does someday become 'balkanized' (perhaps a 100 years from now), it will be because for years people yelled down opposing viewpoints for not being 'rational'.