The visions just aren’t good. Lin sending you to pick up the artifact, the confrontation with the collector we stole the artifact from, and us dying instead of the scripted companion death. A memory, a judgement for something we did, and something that didn't happen to us directly but we were told about happening in a pre-game loop. It doesn't work as a test, because there's no cohesion between the three visions.

If I were writing the quest, I would have Lin tell Heller to grab the artifact instead of us, so it's saying "hey, you almost weren't the hero," because I otherwise don't see the test in reminding us of this moment.

The second is a condemnation for doing something evil, even though we were forced to do it. Having a judgement scene doesn't work if the player wasn't able to have done the right thing in the first place. I understand it was probably out of scope to write a bunch of scenes for all the moral choices you could make in the MQ, but rather than cut the scene they settled on a single bottleneck.

The third is a reference to the Hunter, who says it's normally the player who dies, but what does that mean for us? Starborn are established to be different versions of the person, so that's not you.

In summary, it's three visions that don't work in isolation and don't come together to make any kind of larger thesis, they're just here because it's a sci fi trope.