No, it's very real. However, the context of it is not what the majority of this thread thinks. Basically the function call this comment is in is some kind of texture resolution graphic function. Another comment further up the function talks about how for the Xbox they need to play with some trickery in order to display things properly, and then a little bit down is this comment "This is PC, who cares", which is nothing more than a sarcastic comment stating that because PC's can do anything the devs simply don't have to play with texture paring down, on PC they simply display them at full resolution/clarity.
So, it's actually a sarcastic compliment to PC's, not the dig on how PC's are worthless like most of this thread would like to make it out to be.