I think the Rock'n Roll phase on steemit have to do with growth crisis in any community that finds ways to re-organize and polarize in Steemian Free Cells or groups that actively want to feel engaged in the growth of the community and to escape that sense of the impotence where feel powerless in a big crowd and create that feeling of belonging, empowerment and participation.
At the same time, I think that these free cells have avoided the possibility of Steemit to became a centralized and hierarchic structure, by polarizing in smaller equalitarian sub-communities that keep the original vision of Steemit as an alternative for empowering the people against the mass media blindfold and build new ways for this post-truth Era