If I may indulge in a semi-serious derail.
I think that the Kings have seen so many Jimmer fans because it has been very difficult for the better part of a decade now to be a Kings fan. After the injury-driven implosion of the Webber/Divac/Peja era Kings, the team has been driven into the ground by terrible owners and a handcuffed and/or disinterested front office. It has been years since the roster made any sort of sense, with the closest being the end of the 2010-2011 season. For those outside the Sacramento area or without a strong connection to the area, there were so many more promising young teams to root for.
And so you see player fans making their way to the team. These folks always exist in sports, it's just that they are usually outnumbered by team fans in general.
So, when you get a combination of a player with a large built-in fanbase (Casspi, Jimmer, etc.) coming to a team where the fanbase has dwindled because the team is consistently bad, you see a lot more noise to signal than you otherwise would.