Really? I thought you were a pilot, Hulka..
Exactly what was the F-16 doing at Cessna 150 altitudes and how exactly does a Cessna 150 have the visibility and speed to evade a jet fighter? Have any hours at all in a Cessna?
One hot September day, I was going to fly a Cessna 152. I checked density altitude. 9850 in Broomfield CO. The service ceiling of the 152 is 10,500. I went back to the office and traded the key for 7sierra foxtrot, the company 172 Skyhawk.
They fly the same altitudes all the time, and for the F-16 they fly low level to 50,000 feet. . .mission requirements dictate the altitude.
LOS is the issue that applies to all.
Plenty of hours in bug-smashers of many types. Started my flying career as a 17yr old while fueling aircraft at the local airport. Been around aviation for over 40-yrs.
Been an mishap investigator for decades and I have seen much and been surprised often. That means I know enough to say that initial reports are usually very wrong (other than the obvious—two aircraft hit each other). Sit back, give it some time to let the investigators do their work and we will know what happened.
Passing judgment this early against any of the pilots is premature and unduly harsh and unfair.