uhm i don't think that's the case. the thread in 2008 and 2009, when he had a bit of success and some big wins in grandslams, the cheering thread was still kinda dead. for example, when he beat djoko in the french, a few people posted in the "cheering thread" and then there would be silence for a long time.
It is true that the forum is being underutilized. I am somewhat at fault for not posting more.