Unfortunately, it's a situation where unqualified* men are given authority over a group of people. It's often a recipe for disaster, an open door to spiritual and emotional abuse.
On top of that, these men are not only given sheperding responsibilities but suddenly find themselves with congregation responsibilities - more talks to prepare, elders meetings to attend, etc.
They become squeezed by all the demands. On top of that, their own "righteousness" must be on display at all times. It can turn the most laid back of men into judgmental shrews. Being given authority often provides a doorway for negative, but previously dormant or subdued personality traits to surface.
*These men are supposed to be "qualified", but in many cases their qualifications have more to do with performance/attendance in field service and at meetings rather than true ability to lead and shepherd.