Taffy, I did FI on a day return
best way.
Ian 16th, while what you say is undoubtedly true with many becoming sqn ldr or higher, the point is that today there is not the same BE scheme and competition for the nearest equivalent scheme, like Junior Leaders, is very fierce.
As the forces total, are less than the Army alone of a few years ago, and not much more than the size of the RAF then, there is no way that the Service intake could absorb more than a handful of those NEET, nor would they want to.
These are really just asides from the OP to which the answer must remain, many people do want to join.