I likewise got very close to the centre, and was surprised.
If you had shown me the diagram only, and asked me to position myself on it I would have placed myself on the middle of the perimeter of the second quadrant (135 degrees along the circumference), to indicate that I strongly prefer human friendly and concrete over computer friendly and abstract respectively.
And even as I was answering the questions I felt that I was leaning heavily towards that, with answers like starting simple, documenting well and so on.
I think some of the pull in the opposite direction comes down to interpretation as well.
And actually I see in the repo for the quiz there is a JSON file that contains scores for each question that one could have a look at to see if the answers are scored the same way that you think they would be.
For people who haven’t done the quiz yet, don’t look at the json file until after taking the quiz.
Also, the ranges of possible values are not equal in each direction so the resulting compass is biased a bit in favour of abstract and human friendly over concrete and machine friendly respectively.
abstract: min=-25, max=38
human: min=-27, max=33
Which means that the circle diagram showing the result can give a bit of wrong impression imo.
Edit to add: In a frequency plot you can see also specifically how the possible score additions and subtractions are a bit unevenly distributed