I agree with you that based on the course and the article you posted the ratio of interpersonal skills vs technical knowledge is almost 3:1. But, this is the case here as we enrolled in an engineering degree. So, of course, the program will focus on more technical knowledge and it is also required to have management courses to graduate. there are other programs that focus on business and management only. you have to improve your interpersonal experience. And that’s why we start to see a lot of people Study MPA after they finish there technical engineering degree to have the balance or to meet that expected percentage.