So obviously there is "high quality" and "frivolously expensive" cables, but there is a reason to get a good digital data cable: shielding. Think of something

So obviously there is "high quality" and "frivolously expensive" cables, but there is a reason to get a good digital data cable: shielding. Think of something like UDP traffic. If you have poorly shielded cables, you could corrupt a packet. In the case of UDP traffic, you will never get that packet back. Do this enough, and it may impact sound quality of eg. streaming audio.