I'm sure John Boyd's spirit appreciates the turning circle photo....but the Viper drone should (I repeat, should...) never get close enough to the F35 for it to be an issue. Should, however, is not a principle of war.....
UAVs/RPAS/UCAV etc will all have an increasingly significant role to play in the future - if for no other reason than it's an industrial revenue stream.
Re the ballistic threat to CVs - the threat is not imagined. However, perhaps the development and deployment of DEWs over the next few decades will provide a significant degree of protection from swarm missile/UCAV attacks.