Unsure of the concept. I don't understand why does the developer want to limit themselves in the first place. Money is money regardless of who spends it.

I'm a muslim, not the most learned of course, but knowledgeable enough to know that to stop at the red light is Islamic, to love the neighbour (regardless of creed/race/etc) is Islamic, to keep clean is Islamic - all without the tag. You get the drift.

I have this impression that some people are more concerned with the tags and labels, and worry less about the spirit and principles behind the understanding of the said labels.