"The net effect is that the shield transfer impedance increases with frequency above about 1 MHz"
That would be MegaHertz, not the 20kHz ceiling for redbook audio and 100kHz claimed for SACD. This would have no consequence for audio use, though I wouldn't use it for video use myself.
I am a bit surprised to see the inside of the Audience component video cable. It is probably same as their AU24 audio interconnect, just rebadged for video use. $500 plus for 1m pair of audio interconnects made of their magical OHNO copper, bit of polypropylene, copper spiral shield...