Don't be so overly dramatic. On the one hand Rolls pushed the design as hard as they could to make the best engine they thought they could. They probably pushed it too far, like lots of items on the 787 (battery fired anyone).
On the the other hand Boeing shut down further development of all components when they fixed the design earlier than they should have. Like all new aircraft the 787 was delayed. Previously further testing would have been allowed and this issue could possibly (not certainly but possibly) have been caught. But Boeing allowed no further development of any components. Which in itself isn't a bad thing considering that all the components were coming from different manufacturers all around the world. At some point development had to stop. Unfortunately this time it bit them in the ass.
Rolls, Boeing and the airlines involved are working damn hard to fix the issue. But it will take time. I'm the mean time the regulators have placed restrictions and testing to examine, trap and mitigate the problem.