I saw that documentary. It’s now being recycled on YouTube. They interviewed the Soviet pilot who shot down the plane, and he said that he had no idea it was a passenger jet, even though he had been ‘tailing it’ for about an hour and experts had determined that the KAL logo would’ve been visible in different areas of the aircraft.
The man is living somewhere in Siberia with a tiny little pension from the Russian government, so I guess that if the right TV crew comes along with $50 bucks, any story they want to spin would sound ‘reasonable’ to him.