This article is silly..
I can only speak of the Air Force, but many, if not most career fields are technical and require officers to perform them..for example pilots..a college degree and a commission are required to enter pilot training. The AF has a lot of airplanes, and they require pilots. The problem with the AF is not the entry or mid-level officers, but the PC generals..AF is bloated with useless senior officers.
World War Two had enlisted pilots. You do not need a technical degree to fly. Lots of Line officers have non-technical degrees.
Back in the 1950s I was a AF Lieutenant assigned to Wright Field in Dayton as an electronics engineer. We had to prepare an annual document to be submitted to Command Headquarters in Baltimore in order to get approval for each project. Once the document had been approved by the chain of command at Wright Field, which meant it was on its way to Command Headquarters, we got a copy back. One time I counted all the general officer signatures on my return copy, signatures that had been affixed before the original left Wright Field. Thirty-two general officer signatures. I doubt very much they knew what they were signing. It was just the required procedure.