You realise you're posting under a scientific study conducted by Association for the Development of Motorcycling, the Polytechnic University of Bucharest and a noise emission specialist from Netherlands In the study somebody actually tried to measure this. You need a stronger rebuttal than "this is total garbage lol". You can make your own scientific study if you believe this results are for some reason incorrect, or at least try to point out where the study made a mistake.

Its still total garbage, it was spun.

Move? I'm staying in my lane. And I can't hear them if they're behind me.

In California traffic they can lane split so many drivers when they hear a bike coming up (or see one) will hug the outside of the lane to allow them space to safely pass.

IME the Doppler effect makes it hard to hear on approach, and then loud after they've passed.

I don't think it's even that, it's just that most of the noise points backwards. So I can only hear them when they're in plain sight