Oh God, Pokemon shipping wars. From what I've seen it's WAY worse in the anime, though, the only shipping BS I've seen in the gameverse fandom has been "bawww there's too much of this ship" or "haha our ship is more popular"...Die For Our Ship is rare. Though that doesn't make the examples I've seen less irritating (an ex-friend of mine said Lyra is on her "must kill" list because SoulSilverShipping is so popular, for example).

The anime, on the other hand? Aside from Cori and her self-righteous Rocketshipping ways, we have the Ash shipping wars, the yaoi fanbrats, the shrieking denial of any same-sex subtext, etc. It's a fucking mess.