They've had problems with the 787 since it entered production... this is just to appease folks.

First the batteries caught fire all the time, then airlines complained about finding metal shavings everywhere. Qatar even stopped accepting deliveries from the Charleston, SC plant.

This article talks about it a bit. It's kind of sad, actually, because there's a picture of one of the deceased whistleblowers, John Barnett. https://www.nytimes.com/2019/04/20/business/boeing-dreamliner-production-problems.html