who is "they" the media and the government are not a single entity in germany. if the media wants information about a certain topic they deem important for the public and the government officials don't hand them over the people WILL know.
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then:
we don't know at the moment.
Considering hes of Iranian ancestry: probably.
Although it depends: if his family (grandparents) fled during the islamic revolution they might be very, very secular as they probably feared/faced persecution from the iranian-religious-police.