Slimboyfat— In a careful read of the OP it says there was a law passed in Austria three years ago that required mosques to not accept money from abroad. This kept allegiance with in their host country . Also a measure of goodwill was expected toward that same host country. As I understand it only the mosques that are out of compliance have been shut down for the preach also I’m measure of goodwill was expected toward that same host. Those out of compliance have been banned.
If the extreme version of Islam were not so intolerable (and even at times deadly) there would be no problem. But if you read the plight of those who want to leave Islam or who disapprove of some teachings —they suffer grave or violent responses . Such communities as have those attitudes are adverse to progressive live-and-let-live culture.
There are other measures that are cooperative between a government and the Muslim communities to help assimilate.
Skinhead -jackboot type nationalism is not what will help. This is not what is coming l hope. But ignoring this problem is hurting everyone-progressive, gentle Muslims first and others as well.
What measures do you think would work, SBF?