As I understand it, there was some way to de-anonymize traffic to a certain extent (which is still far better than the current situation), and that turned off some of the "purists" which is just a shame. From a practical perspective, even with some issues, getting rid of BGP is more than enough of a benefit.
I can't express enough how brilliant CJDNS is to me, it's really a magical idea. Which is not to say there won't be potential issues (even potentially existentially damning issues), but wow. I'd love to see this project move forward and get more attention. It's the first thing I've seen that really made me think about how we could design a better internet than the one we have today.
FWIW, I'm already happy to just nominate the CJDNS project as a potential winner of this prize, already.