Nvidia historically didn’t invest in Linux drivers.

Things have gotten a bit better, but there are still plenty of issues with Wayland compatibility specifically.

Install the proprietary driver and it will work, but under Wayland you may have issues with resuming from sleep, stacked transparency, fractional resolution scaling, and HDR compatibility.

Lower loss in general means fewer repeaters, and repeaters always add latency.

For this cable specifically, the optical signal spends significant time traveling through air, which has a lower index of refraction (higher signal speed) than the solid-glass cables in common use.

The article abstract claims a 45% improvement in signal speed, which would reduce latency over longer distances simply because the information arrives sooner.