Note Martijn was specificially talking about Bitcoin. Bitcoin is still based on proof-of-work and i don't see it changing any time soon.
In fact, any change in bitcoin is unlikely as all parties are hopelessly at odds with each other.
Exactly. If a cryptocurrency has some stable basis that's more efficient than proof-of-work (== wasting energy for its own sake), and has cheaper, faster, more efficient transactions so it can actually be used for small purchases, then I totally think that currency could conquer the world. Bitcoin itself is just too limited. Great idea, but too many problems.
Has there been some revolution in bitcoin tech since Dec 2017? Is it not based on wasting as much energy as possible anymore? Is it suddenly being used for far more transactions than before?