Blockstream CEO Adam Back has stated that the threat posed by quantum computing to Bitcoin is still decades away. The primary concern revolves around Bitcoin's use of digital signatures rather than traditional encryption, which serves as a key defense mechanism. Public keys are only revealed when funds are spent, minimizing exposure to potential quantum attacks. Back argues that while some experts warn of long-term risks, the current state of quantum technology is unstable and not an immediate threat. He suggests that Bitcoin can implement quantum-resistant methods well before any significant threat materializes, ensuring the security of its use cases remains intact for the foreseeable future.