There is a trend. The top managers and leaders lying to their superiors (and ultimately the public) about the successes.
What that NTSB person aired, about resiliency and redundancy on these specific two cases is so wrong that it does not even warrant a curse word.
This last one turned out as a non-accident due to pure coincidence. And the incident happened without really breaching much if anything at all. Now, THAT happens, although one should hope not on PK8303 level, and will keep happening. And yes someone will always abuse the merit based qualification system.
The problematic layer that harness all the small ailings toghether is the key stakeholders not exercising their responsibilities in favour of political acceptance (in borader sense of the word).
Exhibit the latest: Right here, that NTBS Chairmen's statement.