I doubt seriously that communications can be jammed sufficiently to prevent control. Secure communictations is much too important to the modern high-tech battlefield to allow a potential enemy to succeed.
"I agree that they’ll take over the most dangerous manned missions someday, but we aren’t ready for them to take over the Air to Air mission yet."
And the biggest reason fot the delay is that the "fighter jocks" in the Air Force want to keep getting their "adrenaline high", not that the technology isn't available.
I work for a Navy Contractor doing test and evaluation on Autonomous and remote minehunting equipment. Trust me - if the stuff we're evaluating is any example of what the state of the art is, it's not ready yet. The number and types of decisions that would have to be made during an air to air engagement are staggering. It is an incredibly fluid environment. The software that we've seen couldn't handle anything near that complex.