This is like saying “why would language matter if you’re using logic and reasoning.” Just as an English-speaking person will likely be more effective with English-speaking people, a Christian will likely be more effective with Christians. Culture, worldview, jargon, language and belief systems all matter.

Yeah, not sure on this one, despite what OP says below. Money is money. The only "Christian" semi issue might be persecution, and most Christians aren't really dealing with that at a heavy level at this juncture.