There is one problem with that. There is no way you can mistake a commercial target at over 30,000 feet for a cargo plane at 10,000 feet. Not possible. Visually there is a massive size difference and the altitude should have been displayed on the radar guidance system controls. And commercial planes, the ones flown by idiots, were traveling through that airspace at altitude throughout the day.
Is it possible that Putin provided these weapons to people who aren't as competent as you assume them to be?