His stunt is actually not making fun of religion.

"Mr Alm, an entrepreneur, said he had the idea when he read that headgear was allowed in official pictures only for 'confessional' reasons"

It is however exposing how stupid political correctness is and why Europe was in better shape in 1945 then it is now.

This is exactly why multiculturalism doesn't work. The end result is total stupidity in an effort to accommodate everyone but the majority.