And where do you get this inside information? I've never seen one report saying anything at all to that effect. Post the links.
"There are a couple of reasons why Matt Millen failed, but none of them were due to the scouting staff. One of the most important aspects of a good front office is consensus building and cohesion. Millen provided none of that and did a lot of damage to the structure that was in place. Millen was known for overruling the scouts, despite them spending hundreds of hours researching their players while Millen would spend a couple of hours on each prospect. Millen drafted players that his coaches didn’t want to work with (Joey Harrington and Drew Stanton,) didn’t fit the scheme (Charles Rogers and Mike Williams,) or on one occasion one coach wanted to work with."
Lions Gab: NFL front offices are central figures on draft day | Detroit Free Press | freep.com
Has some quotes from the former Lions GM as well as the Giants GM. Basically, Millen never put the work in required of a GM.