I am null at cryptography but thie following does not sound too bad as a default tbh. And I think it is misleading to focus solely on e2ee and not mention the distributed aspect. https://telegram.org/faq#q-do-you-process-data-requests > To protect the data that is not covered by end-to-end encryption, Telegram uses a distributed infrastructure. Cloud chat data is stored in multiple data centers around the globe that…
That's all you need to know. Matrix and Signal can't be forced in any way.