Thanks for the link!
I will question the relevance of the first half of the talk (about CAs and SSL) in 2015, with TLS and the CA/B Forum.
But his main thesis about trust agility is quite spot on. I'd never considered it before, and am going to look into Convergence and TACK. He raises a fantastic question - the duration of trust is a real concern.
Comodo is the CA that issued the biggest percentage of certificates worldwide, they even won an award that year or the year after at RSA conference! If you take a closer look though, as Moxie did[1] - we ’re all grateful - you find out that it takes a douchebag with questionable skillset to bring down the entire infrastructure down to it’s knees. It's hilarious and tragic at the same time.
[1] https://www.youtube.com/watch?v=pDmj_xe7EIQ