A story I like particularly is the Phantom of Heilbronn (related to another big scandal: the NSU) which I think explain what is happening: Germans have a great confidence in them and other germans. They are very suspicious when something comes from outside Germany / Austria (like France, Italy, or UK), but if it is german it must be good and seriously done!
Truth is, Germany also has a share of slackers and fraudsters doing half assed stuff, but they admit their failures and sins only when it has become overwhelming, leading to crazy scandals. I still remember my colleagues who were proud of VW when the dieselgate came out. They were completely shocked. VW did this! They were expecting this from the sleazy french and italian, but not from their own beloved german company.
BER is a great example of course.
On the other side when they finally accept to take responsibility over something, you can count on them to do the job! Unfortunately you already lost months negotiating it, you would have been better off doing it yourself.
Especially Wirecard.. is such a failure on so many levels. Lead me to the conclusion: 90% of people half ass everything. It's like "The Wire" all the way. I bet you even Google, Apple and Facebook half ass stuff.. it's just a facade of elitism at those places.. Places like EY. Being a consultant, I've worked at several such places.. it's 100% true. (but to be fair they also had their share of brillant people)
So many people are pretending their way throughout their whole careers. While basically being incompetent.. or not giving a damn.. sigh.