Simplistically speaking, the reasons you quote are why Trenchard moved specialists into a new service the, RAF.
I have seen other specialist 'Joint' areas that the Army has ruined, Scopwith Barracks, being one. (If you know you know).
I am sure you are proud to be in the Army, and rightly so, but the Army must learn to adjust it's outlook to accommodate new capabilities, which require new styles of leadership and management. If they do not they will be left behind.
In a wider arguement they must also understand that Joint does not mean we do it the Army way.