Yes, I know. And you also indicated that " a response on whether or not it was ethical." would be appropriate.
So, it isn't the location as such that is bothersome but how that location may have been obtained. It isn't the appearance of the figure in the setting that's so much of a concern but whether or not the figure belongs to a hooker or not. It isn't about the final image so much as it's about whether or not everyone had fun or not during the shoot. And it's even a concern that it may not have been a real church at all, but just a set. Gotta say, you do have some odd concerns, A4T.
Okay, if proof is absolutely required before you can form an opinion about a particular issue, why not answer the OP question as a hypothetical. You can play Let's Pretend. Lacking the proof you require, pretend that what I described actually took place: that it was all on the up-and-up, in a real church, perfectly innocent, and absolutely joyless. AND, that whatever YOUR perception of artful maybe, it's exactly the same as mine, so you can be assured that whatever I consider artful, so would you. Okay?
So, good friend Angel4Truth, whatcha think? Bad taste or not? Wrong thing to do or not? If so, why, exactly?