It's not just 1s and 0s. That's a gross oversimplification to make it seem unchallengeable. It's an electrical signal approximating a 1 and a 0 and it had better do it right or it's messed up.
Granted, this is represents what a USB cable has to deal with but it applies to all digital cables. The tactic of citing all the protocols and safeguards that ethernet uses to ensure proper and safe transmission have been similarly used for USB and HDMI defenders and it turned out they were wrong. I wonder if some detractors here were in that camp. Maybe they believe a variation of some kind of spooky action at a distance is at play here: that what is at one end is perfectly done at the other.
Minute amounts of noise that can find its way in will corrupt the signal. Now if you're slinging cable and want to transfer text, download legal files, or print your manifest to nail on a church door, then it's not that important because you're printing dead (static) junk. Music, which is always in motion, is a finer needle to thread.
All the best,
Nonoise