...[W]hat I'm skeptical of is how many people here have heard a religious argument that actually made them think, one that has a chance in a real debate.
A-causal blackmail, once I thought deeply about why it might be scary. Took about an hour to refute it (to my satisfaction) - whether it would have a chance in a 'real debate': debate length, forum, allotted quiet thinking time and other confounds make me uncertain of your intended meaning.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.