I'm not aware of any 49ers fans who ever criticized Sherman for being a bad teammate.
9ers fans vitriol for Sherman was that he was a showboat, a loudmouth, and a punk. He didn't win "with class" and all that stuff.
Some Seahawks fans definitely impugned him for being disloyal, only caring about himself, and being a bad teammate towards the end of his time in Seattle, though. After the Seahawks cut him and he signed with the 9ers and was critical of some of the things that went down in his time in Seattle, some Seahawks fans were particularly vitriolic about this stuff.
FWIW, as a 9ers fan, if you go back through my post history here I don't think you'd be able to find me ever being critical of Sherman. If anything over the years I made a point to talk about how much I liked him and his game, because both of those things were true.
I remember getting a lot of heat for saying I thought he was a perfect fit between ability and scheme but that I wasn't sure if he was a scheme-independent top player at his position in the way someone like JJ Watt was, but I *still* think that's true (although not top anymore), and still think that doesn't take anything away from him.
As for Sherman and the 9ers, I also remember comparing him to a professional wrestler, and thinking it was annoying that people didn't get that he was putting on act and persona to elevate himself and his national profile. I also *still* think that's true of that time, and still only ever meant it as a compliment to him and how clever he is. :lol: