The Schelling point works when there is no communication. But how do you know if your community members are not communicating?
Similar, there are cases like "What is the capital of the state of New York?" A Schelling-point answer might easily be New York City, even though the correct answer is Albany. There's research on this stuff in the "peer prediction" a.k.a. "information elicitation without verification" literature, e.g. Prelec, Seung, McCoy 2017: https://marketing.wharton.upenn.edu/wp-content/uploads/2017/...