For example, I could have done an Eagle project the summer after high school, but I left immediately to be a camp counselor at the church camp - something I had dreamed of doing since the third grade. Had I stayed home, I would have had the time to go through with a project. But I had different priorities.
I wasn't in scouting for the Eagle. I was in it for the friends and for the adventure. I hiked, biked, and canoed. I helped my troop become more scout-led. I didn't do it halfway.
That's weird. I don't think I've ever been asked if I'm an Eagle Scout (I'm not; I dropped out at Life, a couple of badges and a project shy of Eagle) in the nearly two decades since I quit. I must not hang out with the kind of people that care about Boy Scout ranks.
On the other hand, if you’re committed to the troop and activities, but are simply not interested in eagle, (as many here have pointed out) – then yes, I agree.
What I read into your comment is more along the lines of:
I think that the boys should be on 'this' projected curve
of achievement going into the future, but these other boys
that have no goal of meeting my projected curve are distracting
the other boys that need to spend 100% of their time with
their eyes on the prize.
The ultimatum of "Eagle or quit" is nonsensical to me. This person clearly has dedication to other parts of his life, and Scouts is just a soical outlet. Why should he give that up, how does that imply impending mediocrity?