All these newbie posters
While one could be critical of recent management activity over the period you mention, I would think the reliability issues for minor things may have been affected, however to say fundamentally unsafe is almost something that would find you in a defamation suit if you went to print with it........ Ohhh you already have!
Engine failure happen, and I think many would agree that that there is not a common thread here, especially with the oxygen bottle incident. I do read the ATSB reports and they are usually the best source of good info. If you ask me it is not out the usual.
Had this discussion with my aircraft partner yesterday and he pointed out to the days of the 707 and the Connie. Engine changes for them were better practised than an F1 team!
QF do seem to get a pretty high volume of media attention though when one lets go. The LCC offshoot JQ can have one on a relatively new A320 and it barely gets in the news if at all. Go figure.