Do you predict, then, that if you put a person in a group where every other person disapproves more of attempts to dodge the question than to provide either answer, and makes this known,then they will never refuse to answer the question on its own terms?

Also, what makes you believe that providing an answer will lead to negative repercussions? I've participated in more discussions of this topic than I could reasonably hope to count, never refused to provide my own answer, and have never observed others to revise their behavior towards me as a result. I can imagine how it might have negative repercussions for a person to provide an answer, but I've never known it to happen to anyone to a significant enough degree that they'd notice. It's possible that signaling accounts for some of these cases, but I think you're generalizing your own attitude to the entire population in a situation where it really doesn't apply.