Good points in Ivan's video about proof-of-work being a dead end, just look at the Bitcoin Cash mining hash wars going on right now, and proof-of-stake not being confidential, pointing out the necessity of an alternative consensus algorithm for the future of crypto.

That said there have been a lot of coins with made-up novelty consensus algorithms like proof-of-love, as well as permissioned, centralized ones such as proof-of-authority. It remains to be seen how effective DUSK's take on this will turn out in practice.

By the way, here is list of 29 consensus algorithms https://hackernoon.com/consensuspedia-an-encyclopedia-of-29-consensus-algorithms-e9c4b4b7d08f