To add to your point, despite this the German population seems to strongly believe there is no corruption in their government. Local minima, everything is fine, there is no fire, I'm going to make some tea while the tables turns to ash under the pot.
I think you see the same thing in every Western democracy where people believe there is no corruption or believe in rather comical forms of corruption, but the corruption is actually systemic and a function of some political configuration that can't really stand change. This is certainly the case in Germany where you have this odd alliance between unions and billionaires that has basically led to, despite the amazing talent of their people, amazingly poor policy delivery.
You might be comfortable in that life, but you won't be competitive.
Because Germans only believe what their state speech controlled media is telling them. The prussian school is based on getting people to respect authority not about free critical thinking. Makes the population easily susceptible to government propaganda which has been used against them for 100 years already and they still haven't learned.
They also don't believe any foreigners pointing out their internal issue: "no, YOU are wrong, we make ze best cars in ze world(not anymore lol), so our country can't be doing anything wrong".