That works with a pair of highly-logical people, but for anyone else it would seem extremely offputting and awkward. Even when I go out of my way to not bullshit people, "sorry but I'm just not feeling this" without at least a reasonable conversation first (even just half an hour) would be tough.

Having said that, I still signed up. What do I have to lose - an hour on HN, and three bucks on coffee? If it's awkward it's awkward; everyone could do with getting better at handling awkward situations.