Not an expert here, so I’m genuinely curious how could a video stream (edit: with muted audio stream) possibly cause another laptop in close proximity to crash?
I doubt it could, but when you run into a problem that defies your understanding of reality, you might try out responses that also defy your understanding of reality, in the hopes you might gain the missing insight somewhere along the way, yeah?
Also not an expert, it would have to be EMI or maybe the bright light was causing LEDs on the nearby laptop to generate voltage. LEDs can poorly work in reverse.
If this is just a fiction novel world‑building question: The video pixels create a bitstream to bitbang the gpu bus into emitting a 2.4‑gigahertz EMF signal to exploit a flaw in the Wi‑Fi driver.
What is claimed in TFA is that the hard drive resonate frequency reacts to the Janet Jackson video in bad ways because that music video puts out music that interferes with what the hard drive expects.
TFA was lacking details so this is merely a retelling.