This is a red herring. This is for improving your technical competency, not for improving your social skills. It doesn't mean social skills are unimportant, it just means that this doesn't focus on that part of the equation. Do you have any issues with the technical material they suggest you focus on?
automated tools are top for improving certain tech skills. like Duolingo is good for as a language starter. But only talking with other people will really teach you the language - people teach each other even if they don't have the intent to do it. Same with technology.
Social skills are very important, cannot be more important in these times. 15+ years in academia, not as researcher, but as teacher, showed one thing - the best learners are those who are best at listening, at interacting with others, not the top-bookshelf-worms. Usually not the top kids, but most usually become top contributors to teams and companies at later point.
Surely now and then an Einstein is born, but we also know of people who were very active in their social interaction without all the academia fuss about it. and academia is one place to find people to interact with. and academia is not only Oxford and MIT where entry level is very hard, nearly impossible.
So all of this is not about academia, rather about being human with humans.
