Ostensibly they are, if they are the root of EA's issues. I don't complain about the servers being down because I don't play games that require servers' constant attention like that. If they were any other than 'social multiplayer' then they would be a real-time strategy game, and oddly while those games tend to sink or swim on the balance, playability, and fun of their multiplayer side, I too generally prefer to play single player on those games as well as I would tend to get my ass handed to me by Koreans.
I would rather play Starcraft today than buy SC2. OK so that is stretching, but I haven't tried the new StarCraft, and it's mostly because of this DRM situation.