I understand what you mean, but it's important to understand the technological side here. Protonmail offers an email service, and despite all privacy marketing,

I understand what you mean, but it's important to understand the technological side here. Protonmail offers an email service, and despite all privacy marketing, very little of that applies to emails which enters or leave their own systems. This is a requirement if their users are to communicate with a non-Protonmail address. Any message that interface with the standard email network is better off regarded as public communication. I can only imagine the legal implications that would compel Protonmail to assist law enforcement after their Service was misused and complicit in an alleged bomb threat. Their Terms of Service surely outline that illegal activity will void their protection as far as possible. Keeping communications inside their in-house, zero-knowledge email service on the other hand, would make it very hard for Protonmail to produce any of this information. That is their actual privacy offer, as far as I understand. To Protonmails defense, I haven't heard that this email has successfully been linked to any real identity past the phony Sulanov alias.