Thats a harsh way to put it but somehow true. Its less about imagination and more about ability.
The people who need this site the most are people who are new to programming or don't have any university background (online courses, self taught). Unlike you these people DO struggle starting their own project and they DO need some help setting up their node.js environment.
The problem is that many of us who learned programming on our own have gone through these initial struggles (although we might have forgotten it). People who are learning online are led to believe that becoming a programmer is as easy as taking a code academy course and when they finish the course, they can't do much cause they have been gamified and handheld too much. Most of these people are giving up because there is this sharp fall from finishing an online course and becoming a 'developer'. We are trying to help these people.
Good developers are not in terrible need of a portfolio but the new ones or the ones who are changing their career path are in need of it to actually get a job.