The only problem I have with this is that it frames the IndieWeb as a response to a specific problem, that is social media. Personally, I see it as a reimagining of blogging and online interaction, as much as it is a solution to social media. As Ben Werdmuller highlights, POSSEing to social media sites has its limits.
One of the things that I value about my IndieWeb site is a record of my interactions. I think that reclaiming this information provides the foundation for even richer explorations.
This framing of social media was something I wasafter watching your TED Talk.