Relax OP_RETURN standardness restrictions

In a recent exchange on the Bitcoin Development Mailing List, concerns were raised about the current approach to handling security vulnerabilities and attacks within the Bitcoin network. The discourse highlighted a significant divide in opinion regarding the best way forward to protect the network's integrity. One perspective emphasized the critical need for immediate action to address and rectify bugs rather than adapting to or accepting malicious activities. The suggestion was made to revert to a more restrictive whitelist approach if necessary, as a measure to counteract attackers who manage to circumvent existing filters.

This conversation reflects the ongoing struggle within the community to balance openness with security, particularly as the network faces continued assaults that have been ongoing for over two years. The impact of these attacks has been substantial, prompting calls for a reassessment of the laissez-faire attitude that has prevailed. The sentiment expressed indicates a deep concern for the future of Bitcoin, questioning the commitment of the community to safeguarding its survival against threats. The discourse underscores the urgency of fostering a proactive stance on security issues to ensure the long-term viability of Bitcoin.