What's with the scorn quotes? Bad though the Iranian regime is, does the headline writer really suspect it was intentional, a decision to whack a particular passenger and rather than just arrest him or her while on the ground in Tehran and do the deed in a prison basement just take out 178 others with the target? And if that's not what it was, and it was really unintentional, does the headline writer suspect that the anti-aircraft battery had a technical fault, rather than it, in fact, being human error?
The several days of blatantly lying before finally saying, "Oh, crap, we got caught!" kind of fuels the suspicion that it was more than an accident. The lies, the proximity to an international airport, that it was a scheduled flight, that it likely was on a known flight path from the airport, these all suggest the people in charge of local air defense need to be asked very pointed questions around the theme, "How could you not know?"
I'm not suggesting it was intentional, but if it was not, there it took a HELL of a lot of ignorance and negligence on the part of quite a few people for it to have happened. One of the questions, to some very high-level people should be, "Why didn't you shut down all major commercial airports as soon as the missiles were launched?" IMO, this looks to have been very preventable.