"I do movie reviews, but don't ask me about this Kubrick dude, I'm not into Russian cinema."
Edit: To clarify, because i don't want to sound offensive: you're entitled to not knowing anything about PC gaming, albeit that makes you not a videogame expert to say the least, but you're not entitled to compare a PC version of a game to a console one based on random stereotypes.
Some people review jazz. Some people review strategy games. Others stay away from PC games. You might have a problem with that, but most sites don't expect all journalists to know all genres or platforms.