They don't even have new FUD.

"""

> Bitcoin

The largest and longest running electronic payment system that tolerates byzantine faults today is

Bitcoin. Bitcoin provides a very high degree of resiliency and security through its consensus mechanism.

However, this comes at the expense of two challenges.

First, Bitcoin requires a large amount of energy consumption and compute power due to its

permissionless proof-of-work consensus algorithm (Bitcoin nodes can join and leave at will and can be

operated by anyone). This is not an essential component for a centralized payment system which

operates in a permissioned setting, and a central bank could leverage other BFT algorithms which avoid

the large costs.

Second, Bitcoin is a single cluster system that does not support parallelization or partitioning. Both

factors cause Bitcoin to have high latency and low throughput. Today, Bitcoin can only accommodate

approximately 7 transactions per second with latency ranging from 10 minutes to one hour, depending

on the probability threshold the payee requires to consider a decision containing a payment final

"""