It is worth noting the following extract from the above report that clearly and unambiguously states that the problems were not due to the new technologies or processes per se, but due to poor implementation.
In each case, the CSRT determined that although the technology was novel, novelty did not cause the in-service issues that triggered the events and the associated challenges discovered during the deep-dive reviews. For example, the CSRT noted one case of internal short-circuiting on an electrical panel’s printed circuit boards. Although a design standard to prevent the short circuiting existed, the issue arose because the design standard was not followed. New technology did not cause the problem in this example; the cause was improper implementation of established design requirements...
The CSRT observed the B787’s use of composites for the primary fuselage and wing structures is unprecedented, but it noted the novel use of composites was not the source of the manufacturing issues it reviewed. Therefore, using the above examples and other similar instances from the deep dive process, the CSRT concluded that novel technology has not significantly contributed to the B787 in-service issues that prompted this review or compromised the safety of the airplane.