It's definitely a problem with discussion forums. It's similar to the problem with 24 hour cable news stations. When nothing is happening, all a discussion forum or 24 hours news channel can do is spin its wheels repetitively. There a strange sort of urgency that's completely at odds with a slow-moving phenomenon. We aren't going to know the fate of the 2008-09 Blazers (or the recession) for a while, yet there's a frenetic pace of analysis and argument.
Lacking new things to churn through, you just get the same fights and themes turned over more and more rapidly.