The reason why Newbies shouldn't be specially allowed to post in that thread is because their feedback can't be trusted. I could make 20 accounts right now and have them rate me in there. In a way, the newbie restrictions make that much harder.
You have a point there. But maybe that could be solved in another way, like some kind of verification to register. At least e-mail confirmation if nothing else, it's not as easy to create 20 different e-mail adresses (especially from a different provider).
If you really can create 20 user accounts on this forum just like that, than that situation should be remedied ASAP, because I know for a fact a lot of users trust the information in that thread implicitly.