I think on top of being representations of stereotypes on the internet, some of the dancestors are also flanderized versions of our trolls.

Rather, a lot of them seem flanderized versions of themselves, the Dancestors are basically Teens locked in a perpetual Echo Chamber of their flaws and drama, without a goal to work towards and being forced to eternity around the Bubbles, they are reduced to amplified versions of what they represent for the story.