I don't think the Air Force will give up on manned combat planes until they come up against unmanned Chinese fighters capable of 15 or 20-G turns that would turn a pilot into pulp or even a sustained 8-G turn that would cause a pilot to black out. The areodynamics of a modern fighter exceed the capabilities of any pilot.
You don't think the USAF is working on countermeasures to unmanned fighters, such as those I suggested? I'd be surprised, not to mention disappointed, if they weren't.