[a16z Crypto: Quantum Threats Are Exaggerated, Protocol Governance and Upgrade Coordination Are the Biggest Challenges for Public Blockchains] a16z Crypto published an analysis article on its official account stating that the market often exaggerates the timeline of the 'quantum computing threat to cryptocurrencies,' and the probability of a quantum computer with real destructive power emerging before 2030 is extremely low. The article points out that mainstream digital signature schemes and zero-knowledge systems like zkSNARK are not easily susceptible to the 'collect now, crack later' quantum attack model. Prematurely pushing blockchains to switch to quantum-resistant solutions may instead introduce issues such as performance degradation, immature engineering, and potential security vulnerabilities. a16z further emphasized that compared to the yet-to-materialize quantum risks, the more immediate challenges faced by mainstream public blockchains like Bitcoin and Ethereum stem from the difficulty of coordinating protocol upgrades, governance complexity, and implementation-level code vulnerabilities. It recommends that developers plan quantum-resistant paths in advance based on a reasonable assessment of the time window, rather than rushing to execute migrations. At the same time, it highlights that in the foreseeable future, traditional security issues such as code defects, side-channel attacks, and fault injection remain more deserving of prioritized resource allocation. Efforts should focus on strengthening audits, fuzz testing, and formal verification.