Anytime someone is killed it's tragic.
However, let's not as a kneejerk reaction blame the truck driver or the media or the state police here. While I agree that a helmet probably would not have made a difference here, I'm not unhappy that it was noted that she did not have one on and that she had earphones in. If it causes others to think about their safety while riding a bicycle in traffic, I'm not against it.
I feel sorry for this woman's family. They've lost a loved one needlessly. At the same time we all assume risk when we ride in traffic. When someone does so with earphones in and helment off this indicates someone who does not put safety first.
Now before I get slammed by everyone here, I'm not blaming her per se. But as with most accidents, whether at work, home, or on the road, a culture or mindset with safety in mind can often prevent accidents from happening regardless of who is at fault.
BTW, I will filter forward at times, but always stop behind the first car. My reasoning is that all the drivers I passed have then seen me, but at the same time the first car can make a right unimpeded, so I don't hold up traffic.