This exact SAM is specifically designed to protect deployed regiments from light fighter-bombers and cruise missiles outside of integrated air defenses. All you have is to select one of a few programs and as far as it has detected bandits in range to push button and let computers prioritize among targets and do the job. It doesn’t take much skills to operate one. The problem is base model doesn’t have any capabilities to identify aircraft, it’s primary mission to provide a sterile aerial environment for a ground troops in a certain area a system assigned to. By default it is ignoring friendly jets equipped with Soviet-style friend-foe transponders but it is not the case for commercial airplane which certainly doesn’t have one.
I have been thinking the same things as you about this missile launch.
A moron could probably launch the missile (a moron likely did)
I heard a talking head on FOX today say it would take 2 years to train a soldier to fire the missiles.
Advanced weapons like this can be operated (poorly) by almost anyone.... It’s like giving a grenade to a monkey.