There is no doubt that they are ways of saving money, but that is the game we are in. If we can get rid of all the waste and beaurocracy then we can get rid of all the people we don't need and then spend the money where it is needed.
That is the theory. But like all these things, it would be lovely to do them the right way around - introduce JPA and Lean and see what savings might be made, rather then start with a target and keep going until you get there - that concept is fundamentally flawed, however necessary it might be in the modern military...