it was clearly hyperbole after the aldon smith and ray mcdonald fiascos
but i'm glad you asked because yes, my perception (of the fan bases) has changed since moving here. outside of the bay, everyone assumes Raider fans are a bunch of drunken ******** (black hole stereotype, i guess) while Niner fans are upstanding citizens. i've found it to be the exact opposite since moving here. every bar fight i've seen on Sundays or fights at a live game I've seen have involved Niner fans. Raider fans on the other hand, just are usually kicking it with their beer and wings, relaxing, and having a good time. so from that standpoint, my perception has changed
i think i've only met two niner fans since moving here that i'd actually want to chill and watch a game with. obviously, there's plenty good fans and plenty bad fans, but the image of raider fans being ******** is grossly overblown.