> A system must use cutting-edge Byzantine fault-tolerant (BFT) replication protocols, which neither of these systems currently employ.
Cutting-edge? pBFT (Practical Byzantine Fault Tolerance) was published in 1999. The first Tendermint release was in 2015. With few exceptions, almost all big proof of stake blockchains are powered by variations of pBFT and have been for many years.
Yep, I still consider them to be cutting edge. Paxos was written in 1990 but the industry adopted it only in 2010s. For example I've looked through pBFT and it doesn't mention reconfiguration protocol which is essential for industry use. I've found one from 2012 so it should be getting ripe by now.
Cutting-edge? pBFT (Practical Byzantine Fault Tolerance) was published in 1999. The first Tendermint release was in 2015. With few exceptions, almost all big proof of stake blockchains are powered by variations of pBFT and have been for many years.