So don't play it. In any case, it's called RPG Maker for a reason. Not everybody has the time or resources to put their soul into every project, and I really could care less. This looks intriguing and I'll be one of the first to play it.
I can see that it's not a resolution difference, it's just blurry because the background is a .jpg image. You couldn't find a .png image of this background? That doesn't seem nearly as hard to fix as a resolution difference - you just need to find the original image and save it in a different format.