I think the actual issue is that a government holds the insane belief that by blocking one out of many ways that someone could make an anonymous threat, it somehow contributes to the safety of their citizens.
If you make an anonymous bomb threat using Gmail in India, Google will hand off all information to the Indian government as they have operations in India and will be held liable, just like they would in the US.
This is the reason why Proton AG honors American law enforcement requests - the US and Switzerland have an agreement that data platforms in both countries need to honor each other's law enforcement requests.
If Proton AG won't give User metadata without litigation in Switzerland, it will get blocked in those jurisdictions it doesn't play ball with.
This is why most piracy platforms and data platforms will honor metadata requests from US Law Enforcement - you will become a toxic financial liability if you choose to flout US litigation.
If all the available platforms allow for data sharing and tracking on judicial orders, then a perpetrator does not have a safe way to give threats, without the risk of being identified.
In my opinion, this is a deterrent in itself, the fear of getting caught.
Yes, personally even I would feel disturbed and anxious when somebody threatens me, but it would be too broad to classify mental disturbance as a safety issue. I am saying this having survived an episode where my father was threatened for life.
I agree that it's a half assed patched, but if a platform isn't responding to litigation or law enforcement requests, there is always the chance of bad actors weaponizing that loophole.
And it's not like Proton AG hasn't been linked to terror attacks. The perpetrator of the Bataclan Massacre used Protonmail to communicate with handlers, leading to the French government to require email platforms like Proton AG to honor French law enforcement requests [1].
[0] - https://www.wired.com/2015/11/isis-opsec-encryption-manuals-...
[1] - https://www.ejn-crimjust.europa.eu/ejnupload/DynamicPages/Fr...
Say what now?!
Why should you use am E-Mail provider to send an electronic postcard. Since when would you need a third party to send E-Mails?
To the best of my memory, sending emails did not require external infrastructure.