I honestly don't find Khemikal unclear or hard to follow. Moral agency involves making decisions about actions based on moral reasoning. You can't divorce 'harm' from 'intent of a moral agent' and still be talking about morality. With 'harm' as the standard, the intent to cause harm is wrong, even if the attempt is unsuccessful, because it's the intent coupled with action that's wrong, not the success or failure of the action (that falls under competence and luck).
I'm not anti-Christian. I'm anti-stupid.