I sincerely hope not.
I have a long-standing interest in the pipe organ and, although I am an atheist, I attend churches and cathedrals not only to enjoy organ recitals but also to appreciate the architecture and history of the places. I should also mention that I am also impressed by the peaceful and welcoming atmosphere of most of these places.
I can't believe I'm the only non-Christian with such interests!
Hopefully, as the following of most religions seems to be waning, perhaps churches may yet survive with functions such as meeting places, musical venues and, yes, organ concerts.