I don't know anything about the victim.
I do know there is a significant increase of people recreating in grizz habitat. No data to support this claim for you sticklers, going by 35 years of my own time in bear country. Further, in recent years I have noticed an uptick of adventurers that appear to be quite oblivious to some of the hazards that exist (in this case bears).
Hiking or trail running with ear buds would be about the dumbest act. Moving around in bear country demands intuition and a level of attentiveness, something many people lack.
More people, more bears = more encounters.
I am all for delisting, instituting a grizz season. I wouldn't hesitate to shoot in self defense. But killing bears won't change a thing.
Sad situation, maybe just an unlucky encounter, but in any case best to keep your chit wired tight. Suckers are cranky right now.