The material is very useful. However, as a C++ course designing for poeple with no CS background, I think the course overall is pretty hard, but still manageable, especially with all the forums where you can find people asking exactly same question that you are comfused. Moreover, C++ itself is a harder programming language compared to Python or MATLAB.
Overall, I think this course is a must for people who want to study MFE in grad schools, and that is also why I rated it as a 5/5.