The article does question why the media continues to try and write off Sanders, at the end. It's not necessarily a good one, but I have heard a theory as to why that is. I think it's safe to say that Clinton 2.0 is less interested in shaking things up than Bernie is. She'll change things, but not necessarily the overhaul that Sanders is talking about. That probably extends to places like campaign finance, where conglomerates that have a media outlet (like FOX or MSNBC or so on) are able to spend tons of cash to get the person they want elected.
Larry Lessig is a guy trying to run through the Democrat platform on one major issue - overturn Citizens United and clean up the corruption from money from big name donors. While this may be shooting at shadows, more than a few people have noticed that after Lessig managed to get some traction with voters on that, his name stopped appearing in polls for 'who'd you vote for' - disappearances that kept him from participating in the debate because he failed to get the necessary percentages. Of course, your average voter is only going to vote for the people you stick in front of them.
It's weak tea to me, and reeks of conspiracy to control elections, but it is something that's out there.