"Tragedy" usually implies something that couldn't have reasonably been prevented, like a tornado, a cancer diagnosis, or a plane crash caused by a fluke malfunction. Going back to the Greek origin of the term, "tragedy" involves bad things which are fated to happen to someone and which are beyond anyone's power to stop. That's what I'm responding to.

Admittedly, in real life, there's no clear division between what's preventable and what isn't, but this is as blatant a case of completely-preventable death as I can imagine.

Edit: You know what, looking into this more, it turns out that I'm mistaken. This article is illuminating: "It is, then a “tragic error", i.e., a wrong action committed in ignorance of its nature, effect, etc., which is the starting point of a causally connected train of events ending in disaster." So a tragedy, classically speaking, is a preventable disaster that transpires as the final result of a small mistake.