I don't fault the controller
I would not fault the controller, he specified an immediate 80 degree left turn but the F-16 had only turned 45 degrees at impact. Nor would I fault the Cessna pilot, the F-16 was above him at his 10 o'clock, which would be obscured by his left wing. "Traffic 12 o'clock, 2 miles, opposite direction" was an urgent situation, with only 32-34 seconds to impact according to the preliminary report. "If you don't have that traffic in sight turn left heading 180 immediately" was a good call. Climb, or right turn would have been better, but "turn left heading 180 immediately" would have done the job. Also, the F-16's transponder put him at 1500 feet, when he was supposed to be at 1600. Don't know if that's a margin of error thing, but that 100' would have made it a near miss.