Air Craft Carries will become obsolete when the concept of air superiority of huge swaths of ocean becomes obsolete. Which means never.
There will be other more effective ways of creating air superiority over huge swaths of ocean.
Smaller, faster, lighter manned "drone carriers" for example. Machines can take G-Forces that Pilots simply can't. Machines don't require the logistics that humans require.
They will also eventually make machine soldiers so that the Aristocratic powers who control us now can more easily subdue us and bend us to their will.