There's no great insight needed: It's just another example of the incompetence that has run through many areas of the club.
The new loan manager and the role Freddie Ljungberg has taken up shows the club are well aware of their failings and are trying to address it.
More generally, I do think that at clubs like Arsenal, it is extremely difficult to take a talented 18 year old and then carve a path for him to becoming a regular first team player. The standard is high (hehe), the pressure is great and it's difficult for loans to lower level teams to prepare young players for those difficulties.
That said, the loans prior to last seasom have been disgustingly misguided and far too many minutes have gone to shitsters in our squad when they could have been invaluable experience for some of the younger players we have--and that has got to stop.