I read their accelerated test chapter and it only confirmed many of the suspicions I have. The have come up with very complete tests for dark and light fading, and some very interesting ideas. But they miss what I think is an abvious element present in everyday display which are atmospheric contaminants. Any gallery or houselhold will have some chemicals which are widely used and can in some measure permeate into the print and cause further chemical reactions.
FYI--paper about variables in accelerated testing of inkjets: