According to PolynomialFi, a critical reminder for traders is the principle 'Not your keys, not your coins,' highlighting the importance of holding private keys to ensure control over cryptocurrencies.

According to Balaji and Vitalik Buterin, the control and ownership of private keys by individuals are not the default outcomes in the cryptocurrency space. They emphasize the necessity for users to actively strive to maintain control over their private keys to ensure security and autonomy in managing their digital assets.

According to Balaji, the ownership of private keys by individuals is not the default outcome in cryptocurrency management. He stresses the importance of explicitly striving for this to ensure true ownership and control over one's assets.

According to Vitalik Buterin, using ZK-email as the sole guardian should only serve as a fallback for new users in the cryptocurrency space. As users gain more experience, they should transition to using M-of-N security measures. This involves either holding multiple user-controlled private keys or employing multiple institutional guardians through zk-wrappers. Ideally, a combination of both strategies is recommended to enhance security.