What classic management speak! When all else fails, or when you don't have an answer the 'leave' line seems to be the favoured 'full stop' managers like to put at the end of the conversation. Why stop whinging? Is the RAAF truly incapable of solving its employees gripes? If you are at that rank level then surely you have an obligation to serve the RAAF which includes the welfare of its employees. So the attitude displayed above is a complete cop out - as usual.
Potentially yes, it is classic management speak. But at the same time I've lost count of the number of times I've heard "I'm not being paid what I'm worth in this position." If that's true it will be very easy to find a position with the same conditions, increased pay and no reason not to move to the other organisation. The fact management aren't increasing your pay to prevent you from moving to these roles is a clear indication they don't agree with you, you may consider it a cop out, but it's their budget and their choice. Turnover is part of any organisation and they are aware of that, they don't have to keep you happy for life.
If a large number of guys walk at the same time to these better jobs they'll talk of and management were hoping to keep at least a percentage of them, then management will get a clear picture that they are wrong in the current market and do need to pay more to keep that percentage happy. However if it's just a trickle of guys moving on, then management have hedged their bets in the right direction and keeping the number of staff they want to keep for the price they want to keep them.