Actually, the point of my suggestion is to completely avoid having to render the service AND the potential legal threat, and do so essentially at no cost to the business.
Let’s face it, no gay couple is going to spend money that ends up being routed into gay conversion therapy. But such donations are perfectly legal (even if, in the case of New Jerseyites, the donations need to be sent out of state). Net result: a very angry, frustrated and disgusted gay couple storms out of you business knowing that there’s not a damn thing they can do about it.
That makes sense if it would work. I just think they would demand that you perform the service and then still whine. Better to in some way avoid explicitly saying that perversion makes you want to throw up and violates God’s Word, at least while under the gun for a lawsuit. We disagree on that point (I guess we have had different experiences with these demanding perverts), but good people should be able to disagree agreeably.