No, they're decommissioning her because she's too worn out to keep in service. During the 70's and 80's the Navy undertook a series of major overhauls called Service Life Extension Programs (SLEP). This was basically a 2 plus year rebuilding of the carrier. The JFK, being the newest, was the last to be scheduled for a SLEP and when her turn came they cancelled it and did a less comprehensive overhaul instead. As a result, the last I heard the JFK couldn't operate fixed wing aircraft because her catapaults and arresting gear was unsafe. In order to bring her up to snuff it would take two years and hundreds of millions of dollars that the Navy just doesn't have.