The problems on this part of the interface (like incorrect loading) can be cured with a line driver that can easily fit in a cable. Without it, audio and video artifacts can be present.

The LEDs also provide important feedback information about whether the source device is outputting adequate voltage, successfully making that hot plug detection and verifiying proper use of HDCP and EDID.

So are they saying that players are ouputing bad data? Not likely.
Sat boxes are outputing bad data? Not likely
Whats making the data bad? Is the cable correcting it own bad?

I not real familiar with this data protocol but usually to correct data you need to have some redundency to correct with. If the player could not correct an issue with the disk then that data is likely GONE. If the SAT receiver looses lock and can’t correct, then there is no way for the cable to fix that. If the cable introduces the errors then they just need to make a better cable

Sounds fishy