The report is skewed & somewhat alarmist but I think the thrust is in the correct direction.
As d8 says
so while "certification" is supposed to create an environment of robustly designed components, in fact what it does is to lock in place the first approved design of something. The cost of change becomes prohibitive, + it allows for excessive pricing
some of the problems are masked by only allowing licensed maintenance,
the license maintainers get accustomed to working with the crap designs and become quite practiced at keeping them serviceable.
There are problems with car recalls but the manufacture picks up the bill.
I wonder how the statistic per hour driven v no of units correlate to aircraft.