The "If you ain't FJ you ain't ****"........
..... mentality caused the ME world to lose a lot of potentially good operators.
My experience was watching Nimrod QFIs spending a lot of time building up a young man's confidence. They had either washed out at Valley or in two cases who come to mind, a FJ OCU. Those two went on to become very good squadron captains then squadron commanders and station commanders.
One did need a stern talking-to in the back bar one night along the lines of "Listen matey you failed that course, get over it, stop harking back to "when I was on....." and start trying to become the best co-pilot you can be". He went on to do well and is a thoroughly nice chap with it. (Even though he's a pilot and VSO)
I speak as a non-pilot (as oxenos will no doubt attest to in a micrisec) but I watched a fair number of young men going through that evolution from down the back.
The Ancient Mariner