One of the challenges facing modern aviation is that (mechanically speaking) things rarely fail.
Remember reading an article decades ago by an airline pilot who had grown up on aircraft such as StratoCruisers and Constellations crossing the pond. He then converted to the Boeing 707. After he had flown the B707 for circa 7 years he looked back though his logbook and realised that on said a/c he had never had an engine shutdown or any type of failure/fire etc. He went on to say that in his previous types on an atlantic crossing it was very rare not to encounter some form of engine problem (large piston engines with lots of reciprocating parts versus jets).
On older a/c with less reliable powerplants the crews routinely expected to encounter an engine malfunction and were therefore more "geared up" (sorry about the pun!) for a failure.
These days most crews hardly ever experience a real engine malfunction other than in the simulator. Throw in a bit of the "magenta line" culture and we have a potential recipe for disaster. This means that crews have to be even more disciplined and mentally alert for the events such as these. This in turn also means crews must be better trained in all respects.
It was purely fortuitous, I would suggest, that this was an incident and not a major accident - a very lucky escape.