sbomb - you're making the leap of thinking that the adcoms are linking "helping people" with being "good" & doing "community service".
There are a huge number of people who are tremendously smart as evidenced by their ability to obtain high grades &/or scores on test. But...some of these smart folks can't relate to people or communicate well with people. They can be creative, inventive, able to sort out all sorts of difficult problems & theorems....but they can't relate. Think of some of your nuttier professors or very smart computer engineers who know absolutely more than any of us ever will know in their fields...but you wonder how they can function because they have no social skills....
In pharmacy, medicine, dentistry, etc....most of the healthcare fields - you have to be smart enough to learn the material, but you also have to be able to communicate with people. If you can't relate what you know to a prescriber, patient, nurses, co-workers...you will have a hard time, unless you pursue an area which is independent of others - research or writing in pharmacy. Some people find these areas better fits for them because they do better with lab benches & lab techs than with the public.
Same with medicine - these kinds of people go into radiology, pathology or research....they just don't like the people aspect of the job.
But...its not all about grades & scores.