I really have to echo other sentiments in this thread. Unless there's evidence of fandom "ruining" a game by influencing a game design change, how is the game "ruined" for you? I can see if it's a multiplayer, or especially MMORPG game where the community may have a direct pipeline to the design team to change mechanics. But if it's a single player game and I enjoyed it, the rabid fandom may annoy me but it will hardly "ruin" the game for me - the game's going to be the same no matter what.