"The real time to worry about the quality of those cables is when you go over 6 feet," would make sense as something said to the cable manufacturer. Translated to consumer-speak, that would be "it's really quite hard to find cheap HDMI cables longer than 6 feet from a well-known brand." (Of course, shady brands will just sell the crappy cables and rely on people's innate laziness and stores with no-refunds policies.)