It's not just negativity though, there is also the other extreme, the overly-positive who just keep posting stuff like 'in X we trust', 'we are Liverpool' etc. Reminiscent of those stupid 'Believe' adverts'.
In part the relentlessly negative are a reaction to the relentlessly positive, these things don't happen in a vacuum.
I have said it elsewhere, the real problem with RAWK these days is the middle ground is continuously squeezed between these two extremes, if you post a mildly disparaging post in victory, the 'postivists' will harangue you for your treachery, post an upbeat post in defeat and the 'negativists' will screech at for your blind stupidity.
Yesterday was the perfect battleground for the extremists, a victory that felt like a defeat, chances of reasoned discussion and analysis 0%
I think the mods attempted to balance these two camps with innovations like the 'round table' post, but even this has been suffering a bit as it has become populated by posters who think that they have to have a lengthy post to appear serious (which end up TL:DR), rather than a reasoned, reflective one (not that I am any saint here, all my posts seem massive) the result has been a lot of opinions, not enough consensus forming analysis.
The problem as I see it is if the mods only hammer the negativists (who are patience trying) the positivists will hail this as a mighty victory and the forum will be overrun with zealots.