I don't have anything to add, other than to say that I've had similar frustrations with people. It was mainly in my heyday of debating theists on the Internet. I quite often would encounter the same exact dismissal of logic when presenting a logical argument against the existence of god; literally, they would say something like "you can't use that logic stuff on god"

Did a theist really get you to contemplate suicide by making that argument in an internet discussion? If not, then I don't think that you felt a frustration that similar to what the guy in the first post felt and read something into the post that isn't there.