From my perspective, the loss of bitcoins is an inevitable part of the cryptocurrency ecosystem. While losing 4-6 million bitcoins may seem significant, it's also a part of the unique dynamics of this asset. The idea of updating the protocol to replace lost bitcoins, while appealing, seems impractical and risky. Protocol changes could undermine trust in the system and threaten its decentralization. Instead, it's better to focus on ensuring the security and responsible storage of one's own bitcoins to minimize the risk of loss.