Different team, different culture, different coach, FO and owners a shell of what they once were. Of course it was going to be much more positive on a forum at the beginning of our stretch of eight straight playoff seasons. Expecting comments similar to when we had JWill, Vlade, Peja and Webb would be an insult to those guys.
Raiders fans complain a lot too, and for good reason after having the worst record in the NFL since being in the Super Bowl in 2002.
I think you should be happy enough fans still care enough to even be on a forum and discussing this team after the last 5+ years. Not criticizing fans who still care after half a decade of futility. Game threads here and on STR are much quieter than they used to be, and it most likely is due to all the crap fans have to put with, on top of the on court product, not because a few "negative" people scared them off.