When I read the OP I thought the intent was to discuss how genetics may impact sleep. I thought it was a "here's a scientific study, what do you think about the study thread." From reading the OP I never thought posters were only allowed to talk about genetics impacting sleep though. From the OP I didn't think it was in any way shape or form a "support for mums of kids who don't sleep well easily" thread.
I don't know whether that assessment is on or off the mark though!