Sharkey, like many officers of previous generations, is irrelevant and the sooner he realizes this the better.
I was brought-up in a tri-service environment and not long before I left the military we really started to think Joint. If Defence is to remain relevant, we don't need idiots spouting-off about what colour a particular capability should be painted.
IMHO, the really good senior officers I worked for were purple through-and-through. They understood and respected the individual attributes and skills that we all brought to the party.