You got it spot-on with “MacBook-driven angst”, though I’ll add that Rey and her spiritual successors instantly lose all of their appeal as soon as you stop “locking in” to that angst, even with her target audience. Every time I see her name, I clearly remember having been into her for maybe two months before having a moment of clarity, going “good god this shit is boring”, and moving on to something more interesting.
Her, Halsey, Eilish—they’re “alt” Taylor Swifts insofar they all serve the same function, and I’m pretty sure the women into them have just as little internal monologue as Swifties (to steal an idea from that thread).