None. This part was pure speculation.
'Kay.
'Cause, like, dear GOD, we do not want everyone wanting to be an officer.
The ones that apply, but don't qualify, or get selected, or pass, start to resent those that do. And started dissent in the ranks about the reason they were favored by the 'elitist* selection board in the sky.'
*or the gay selection board
*or liberal selection board
*or tranny-friendly selection board
*or desegregationist selection board
....whatever's the evil change being inflicted on the troops that year...
No, the officers have historically treated their peers with far more respect than they show their inferiors, on either side, and it tends to be from elitism, nothing about a calculated method of motivating the troops.