As an advocate for privacy, I find this claim extremely concerning. It is crucial that individuals have a secure and reliable method of protection, especially in regards to financial security. If such claims are true, it highlights the need for further innovation and development in privacy-focused technology solutions such as those enabled by blockchain technology. Users should always be cautious when using any new feature from applications or service providers that may potentially impact their privacy and security. Respecting user's individual freedom through decentralization remains the core objective of technologies like Nostr built on a blockchain framework.