Every team in the league has it's real fans and those people generally post on that team's forum if they post at all about basketball. Those from every team who venture out to spend the majority of their online time on some other team's forum aren't really fans of the team they claim, they are just looking for a free ride to some higher ground they can launch bombs from. This is why you'll see accounts registered in volume after the Pau Gasol signing, then again after the 2009 championship. You'll see some Lakers management accounts after the Howard acquisition, when people thought Howard and Nash were going to shake up the world. They abandoned, traded or simply gave those away after the ugly truth was revealed.
There aren't many here who talk basketball. The large majority just take free drive by shots during their 20 or so internet forum hopping daily venture. Dale has gotten caught up in that as well, spending the majority of his time at the Suns forum then here. I highly doubt the large majority of these post-event users ever posted anything significant on their own team's forum. I've been there, there's decent basketball take if you can stomach the syrup of homeism it's laced with.
So when these folks look for an exit, it's usually because they've settled into an account and don't want to totally on it, but also don't plan on being on the other end of the bomb. Basketball talk is often elsewhere. They don't care who gets them to the higher ground, they'll catch any bus that's going there, and this year that's the Warriors. None are immune.