I clicked on the article (reluctantly) and its source is a German article, but does not link to the actual issues being seen or the report. Maybe a German who lives in Germany can find the actual data? I'll wait for the actual data to form an opinion.
As a guess, I'd suspect that the actual data would show that these 'issues' being found are innocuous as Tesla's warranty costs have been declining overtime and if someone rolled into the inspection not knowing they had these issues, how bad could they be? and these Tesla's are still under warranty as well so maybe the owner hasn't done due diligence in getting them fixed?
In EU we all have to show our cars for inspection every other year. It is very common for these tests to find issues like almost worn out brakes and other common car problems from missing tail lights to more serious damages scrapping the car. These tests are usually performed by garages who then offer to fix the issues on the spot. So a few hours after failing the test the car passes the test and is again roadworthy.
It's a big nothingburger!