No social platform is going to disrupt the existing systems until they decouple content and organization. The main issue is that we assume that all 'upvotes' are equal. If a user can select who is in their filter layer (like in Twitter), as opposed to selecting content (a subreddit), there will be a shift away from the cycle of bread and circuses.

Hubski may be doing that but only implementing this one graph node deep and only having one default category for information, will probably not create a vibrant and diverse community.