Not everyone has a glorified PC, but this is mainly a 2D game. I would understand if you were talking about Half-Life 2 or something. And even if we don't all have super computers, it would still be nice to be presented with all the options possible; for debugging as well as optimisation.
But you still found it, no?
2d game or not, the chars are in 3d and I still have the ol' p3 666mhz (a proverb: if yer evil, ya have ta stick wit' an ol' 'puter) and I am happy that at least ONE of the new games have low sys requirements.