It’s tricky to say. Organised religion throughout history has been one of the biggest oppressive machines and cause of untold human life lost. On the flip side, religion has been the source (or at least financer) of an enormous amount of the most highly regarded artistry in our history.
The reason that isn’t an obvious tip of the scale, is that if religion poofed out of existence, I’m almost certain that the oppressive machine would have just taken another form and still caused untold destruction, loss of life, and hatred. But I’m not sure the art would have still thrived as it did.