The power to Silence accounts, or whole domains of them, is as necessary as the power to Unfollow or Unsubscribe. They're all ways we curate our own social media experiences, avoiding digital pollution like spam, flooding, angry rants, dogpiles, etc.
#fashionistas are always in part a reflection of the #mainstreaming agenda, as are the #geekproblem I think we need to change the mainstream to bring change to these groups.