You used the term "fanatical religiosity"
I don't see anything to suggest fanaticism of any kind. It would also appear that this man is in the minority as far as feeling some imposition by have to be in the presence of people at prayer. Maybe he's the one who needs to either learn greater tolerance and not expect the majority of his classmates to bow to his wishes. The world isn't about him first and him only. Sorry but I don't see a legitimate beef here.