Steven Pinker suggested that scientists should voluntarily avoid research and discussion of such topics, not because it's not worthwhile, but because (given human history and social organization, and the fact that "race" can be used as a highly visible marker) it can provoke the worst in people, or be used by bad ones to justify their nasty attitude and behaviour.

I could subscribe to a version of this dictum, but it should apply to all participants and views, not just a particular theory someone prefers.

If there are rules (better spelled out) like "any discussion of a connection or lack thereof between genes, race, and cognitive abilities is not allowed on this site", fine with me. I can see the reason, and anyway it's fair.

Allowing some people to say that there is no connection, while suppressing ones of a different opinion (in a scientific context, mind you) is entirely different.