If a you buy an instrument and it is perfectly set up for the way you play then great - it's "perfect" for you. I have never purchased such a guitar; they have all needed action adjustments - nut, saddle, and relief - to suit my playing preference. Hence my term that it is a "kit." I will agree that "kit" is perhaps a bit of an overstatement.
But I think a lot of people put up with a guitar that could be better simply because they don't realize how relatively easy it is to change and the fact that it's a NORMAL procedure. This is especially true for a first time buyer who may naturally assume that because a guitar comes from some famous company, "they must know what they're doing." They know how to make guitars but the factory action spec can't possibly fit every style/preference.
I am NOT saying that mass-produced guitars are badly set up, just that for many people and serious use, they can be adjusted to play better.
For many of my young years I played guitars as delivered because I didn't know any better until one day I played a couple of identical model guitars and one was a dream to play while the other required considerable effort to play any barre chords. The shop owner told me that the nice one had had some action work done. "Action work?" I thought, "What the heck is 'action work'?" He explained and converted me into the "kit believer."
