Reportedly, iFixit reports that the flex cables are actually integrated into the display. Because of that, they cannot be swapped out individually. Instead, the entire MacBook Pro display unit needs to be replaced when the flex cables are damaged.
It’s also worth noting that the issue takes time to manifest, since it’s caused by repeatedly opening and closing the lid over a long period. Because of that, many affected MacBook Pro models will be outside of the standard one-year warranty.
Both of these factors lead to a fairly hefty out-of-pocket repair cost for affected users. Some users indicate repair costs of more than $600. While some users have successfully had Apple cover the costs, others report needing to pay it in full.