IMHO an "Eagle Mill" is a Troop that solely focuses on producing a program that gets a Scout to the rank of Eagle. As mentioned by others in this thread, parents seem to be desperate to get their son's "Eagle Award" block checked for the College application. Many Scouts do the minimum requirements and all activities center around Eagle Projects or whatever it takes to get Eagle. It becomes an individual Race which has virtually eliminated the Patrol Method in a Troop. "Leadership" is NYLT and other programs to be added to the "Resume" and not the practical experience of being an effective PL, SPL or ASPL.
I don't have an issue with a Scout earning his Eagle at 13 or 14, but I would have to question how much actual skill he has at that age, and what experiences has he had by the time he Eagles? The program has specific guidelines for Eagle, so perhaps at a National level it's now too easy to get Eagle. (Not my opinion per se just a thought.)
For my sons, I will encourage them to meet the Ideals of being an Eagle and not just the book requirements. I want them to earn all the main outdoor Merit Badges (Hiking, Backpacking, Wilderness Survival along with Eagle Required Camping). I want them to EXPERIENCE Scouting and the ideals and vision of our "Scouting Founding Fathers."
If my sons can't complete a 14-mile round trip solo hike on their own, as was required back in the 1930s for 1ST CLASS!!! then they have not proven to me that they really are experienced and skilled enough to be called an EAGLE SCOUT today. That's for my sons...
I think as Leaders we need to inspire our Scouts to be more than just Rank and Merit Badge chasers. We need to encourage them that nothing compares to experience and knowledge and that it's the journey that will change their Life, not just the line-item-notation on the Resume.
F.A.S.