I suspect a number of contributors to this thread have neither understood the OP's post nor watched the video(s).
I've been playing since alpha and was totally unaware that this was a thing. It's actually changed my perspective on how the game is working to some degree, because I'd always assumed that supercruise was a mechanic or domain almost completely divorced from the environment of "normal" space, with ships rendered as bright comets for speed and visual convenience. Seeing the actual ship models there has changed all that, because I doubt FD put those in just in case players flew insanely close to each other. The engine must be ready to render them all the time, which means supercruise has a lot more in common with "normal" space than I thought.
It leads me to another topic: why other ships put out such a high intensity light with tails. Imho, its just not realistic at all (and I've tried removing it with a mod but was not successful).
IIRC the lore is something to do with frameshift physics, and the bubbles around the ships acting as an amplifier for certain types of EM radiation, most notably visible light. Meh.
The lights never bothered me much, but I still hate the comet tails. Not only do they look really bad close-up, but the way they swing around as the ships make rapid turns makes them look less like the result of exotic physics and more like what they are: simple rendered primitives in a 3D computer-generated volume, aligned to a vector. They're one of the few things that can take me right out of the game when I see them up close. They don't even add any useful or tactical information. If there was a way to disable them, but keep the glowing lights, I'd be all over it.
Fortunately they're only an issue around busy planets. Most of the time I barely notice them. And most players don't seem bothered by them at all, to be fair.