Making movies is not rocket science. It's about relationships and communication and strangers coming together to see if they can get along harmoniously productively and creatively. That's a challenge. When it works it's fantastic and will lift you up. When it doesn't work it's almost just as fascinating.
The restriction of religion to private life therefore does not necessarily threaten the vital interests of the majority religion if there is one and it protects minority religions from tyranny of the majority.