This topic is interesting, because we at The Quantum Resistant Ledger or explicitly working on this issue. We are currently running a testnet and have period updates here on Bitcoin Talk. While many systems would be vulnerable to a quantum attack, we know that government and financial institutions are currently investigating and updating their infrastructure to protect against Quantum Computing threats. Therefore, we believe it is vital to prepare ourselves, as well.

The reality is that blockchains, and specifically Bitcoin represent a very lucrative target for state level actors and rogue agents. The very unregulated nature of Bitcoin makes it susceptible to targeting. Therefore, we understand the risk tolerant perspective taken by some. We are taking a risk adverse perspective, especially with experts believing that there is a 15% chance Quantum Supremacy will be achieved within the next 10 years.

We would love to get your input and thoughts on our dedicated post https://bitcointalk.org/index.php?topic=1730273.0