I don't really see its point. Unblack Metal is music on top of everything, and it's pretty damn good, but that's it. This is mainly because black metal itself wasn't meant to promote christianity in any way when it first appeared, so it's a bit contradictory to it's essence for me.

Other than this, everyone has the right to play whatever kind of music they want to, and if people like it, then go ahead and listen to it if you find it enjoyable and suitable for you. I don't have anything against it.