ROP: Pipping a person's faith away" -- is that even possible? A die-hard believer will shrug off even the most compelling proof, and those who aren't sure about it don't have their faith wrapped too tightly to begin with -- no ripping needed, not even nudging.
It's true, many people who come here actually don't have much of a faith, or they wouldn't be questioning and come here. The question is, do you want to help them out of the the Watchtower, or if they are already out of the Watchtower, help them move on mentally? If the answer is no, you want to heap ridicule on them because they still have some kind of faith in God, then by all means heap on the ridicule. You may not be ripping away their faith as stated in the OP, but you may cause them to retreat back to Watchtower, or back to not knowing what to believe.
If you want to help then learn to reason (we know we didn't learn THAT in the dubs, did we?) and break free of the dubbie circular reasoning, then you must must realize some of the ones who argue the most are are really just trying to convince themselves. If you discuss without ridicule, you might help them along their spiritual path, whether that path be to Athiesm or not. You already have confirmation of one person that he was turned off by the ridicule of some here and did not come back for years. There may be some who are still figuring out what they believe, post Watchtower. If they can't express what their current thoughts without getting smacked down, how are they going to figure it all out? It's not that you can't confront the weaknesses in their logic, it's how you do it.
TOP: Those who do bear a heavy responsibility are those who try to impose their heavy-handed beliefs on others
You are talking about right wing Christians, but aren't some of the Athiests a bit heavy handed as well? At least as far as some of the discussions here. I am not right wing Christian BTW, and I agree with you about prayer in school, etc. But it works both ways. Respect the person as a human being, no matter how a weak their argument, argue the logical fallacies in their beliefs, but don't try to make them feel stupid for voicing an opinion. That may make you feel better, but it won't likely do anything for them