The problem with the thrust of that argument is that it is always assumed that the majority practicing in some way does not show respect to other religions. Thus saying those of the minority are being disrespected? How do you fight that? The "peer pressure" argument usually follows closely on the heals of the respect thing and down the slope we slide....
Wonder what they do at Notre Dame? If you are Jewish there but play football do you have to pretend to be Catholic? NO I know they don't but the absurdity of the thought seems like where those opposed to "prayer" see it ending up. I really wonder what they do there, and many other religiously based colleges?