I'm sorry? You have a problem with people furthering their education?
What I gather from this is that there are many factors contributing to the lack of success (as opposed to outright 'failure') of some candidates in IAP/BOTP. It could be injury, illness, low level of fitness, VR due to personal reasons, or some combination. I wonder what the actual number is for those who simply fail the courses due to lack of ability, effort, or 'the right stuff' and not for any of the aforementioned reasons. I'm betting it's nowhere near 50%, or even 25%.