Ok, kilt makers. I have a question I need an answer to.

When someone says a kilt is 'hand sewn", do they mean that every stitch in that kilt is put in using a needle and thread, with no sewing machine used at all? If a sewing machine is used, what can be sewn with a machine and what can be sewn by hand, and still call the kilt hand sewn? In any case, why is hand stitching superior to machine stitching?