Complexity causes half of product returns?

In the fast paced consumer world of today is it any wonder that people rarely stop to take the time to read instructions. According to the attached article nearly half of product returns in this European area are due to consumer error. How much are the producers suffering due to returned products which eat into profits? I think that it is a worthwhile investment for theses producers to develop more consumer friendly directions which users would be more likely to read and understand. Nowadays many computers come with setup instructions that are only 3 steps long and color coded on a huge diagram. It only makes sense that the widely expanding market of consumer electronics follows suit. How are these returned products affecting the existing supply and demand curves? Would a change in the way producers include directions create a shift in either the supply or demand curve?