In the sense that it's used today, it's intended to destroy the free exercise of religion.
I don't get too involved in discussions of law very often, so I haven't followed this thread much. But as an inhabitant of a town of about 10,000 people that supports about forty or fifty Christian churches, none of which are taxed, I can assure you that you and David Barton both are very, very mistaken about statements like that.
And from observation, I think I can say that Barton is deliberately lying, not just mistaken. I don't know about you, Marc.