Employers aren't going to judge a project based on how many stars it has, that's the exact issue this is trying to address. One of the projects I am most proud of has no stars. Popularity has little bearing on how well designed or elegant a piece of code it.
i'll agree that in order for Github to become the personal CV (and it should!), it needs to account for all use cases (ie. profiles without any popular repositories).
but, as a hiring manager, i don't use Github as a measure for competence. i use Github as a measure for involvement in the open source community (competence usually comes incidentally).
having 30 projects with 0 stars does not really do anything for me that a single code sample through email could not. no matter how you categorize them.