Unless I'm reading you wrong, those "other benefits" amount to no more than signaling tribal loyalties, at least in practical terms.
ETA: . . . and if that kind of behavior helps a tribe to grow, it does so for non-truth-tracking reasons, producing a tribe full of people who are there just because they like the company.
The benefit is to help other non-believers (and perhaps a few believers) realize that Armstrong's article (and defense of religion in general) doesn't fit into the category of "Respectable beliefs I disagree with", it fits into the category of "Intellectually dishonest nonsense that should be scorned and ridiculed".
It's a benefit closely related to breaking the taboo that protects religious beliefs and raising the sanity waterline.
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).