Categorically false. A high bandwidth data cables (aka wires) does introduce RF noise / EMIs. That's why ferrite bead were invented to reduce the noise. https

Categorically false. A high bandwidth data cables (aka wires) does introduce RF noise / EMIs. That's why ferrite bead were invented to reduce the noise. https://en.wikipedia.org/wiki/Ferrite_bead https://en.wikipedia.org/wiki/Ferrite_bead The reason some ethernet cable and audio cables don't have ferrite beads is because they have internal metal mesh EMI shielding. But not all cables have that.