From my experience at a German university, it was very clear that every student with a desire to learn would learn relevant skills and have no trouble passing any exam. The exams never were easy and studying was required,but if you understood the subject you would definitely pass.

The experience the author describes seems totally disconnected what I have ever experienced in university. The author believes (which I think is unlikely) that the university had nothing to teach to him, in my experience this always was the fault of the student. Often blaming "esoteric" and "irrelevant" subjects such as linear algebra for their lack of success, while not understanding that it is a vital course for any engineer.

The poster was achieved success in all metrics he was exposed to.