Andreas speaks about DAG. I think he is right that with DAG you sacrifice decentralization and coersion resistance by removing proof of work. Byteball is a good example of this. We have 12 witnesses in the hands of 1 person. And even if these 12 witnesses are 12 different people it's easy by governments to coerce them for censorship or just shut down the whole system.
https://www.youtube.com/watch?v=lfgMnbb5JeMCould you tell some more about this? Is this from the white paper or some other source?
Yes, the white paper clearly defines 12 witnesses. These are the authority in Byteball preventing double spend that every user needs to rely on.