There is an 'it should have been done better' thread running through the comments here. No amount of 'better' would have saved this mess. The swimming-pool-liner-blue background has been noted. Does it fit with the rest of the building? No. Do the curving lines of the design fit with the severe triangular space they've been confined in? No. Does the garish night-time lighting fit with the rest of the building? No. This design (absent the hideous blue) could work - on another, new building. In this case, it looks like vinyl siding on a Second Empire house. With neon lights.
As to the symbolism, it probably works. Given the way it eschews Christian iconography of any kind, I think we can assume that this is exactly what the congregation wanted. It's a good way to say 'don't confuse us with those Christians.' And it certainly is their right to say so. But did they have to say it in such an eye-poking way? It looks like the entrance to the Tri-Cities Mall.