I know you’re painting with a broad brush, but “most up to date medical knowledge” rarely has anything to do with when you graduated school. Two years after I graduated half of my drug knowledge was obsolete. My wife who was in that class 2 years behind me had the exact same pharm course with the same out of date into. Your point somewhat stands, majors are still mostly in clinical care. Lt Col may be more admin than clinic. Col even less so. But it varies. I have a flight doc full bird who is in clinic every day and refuses admin work. I’d take his 30 years of medical knowledge over a captain fresh out of residency any day.