I've wondered for a while whether the F22 was cancelled as it was recognised that it would soon be superseded by an AI air superiority fighter. Perhaps there's a warehouse full of them already somewhere just biding their time. After all, they don't need to go and practise - or at least, only one of them does.
I imagine air superiority must be one of the easiest roles to automate without unduly risking civilian/friendly-fire casualties.