Earlier quoted context omitted.
Because of the nature of the encryption, it allows more convenience compared to WhatsApp and Signal. For example, on Telegram you can (and we do) have a million people in a group without exposing their phone numbers. This has proven itself to be extremely useful to protestors. Signal failed massively, you couldn't add too many people and you always had the risk of exposing the phone numbers. Along with that, you can…
"The chats instantly appear after login. " I agree, that is very convenient. Also for the secret police officer.. I use telegram as social media, but I really would not use it to organize protest somewhere. Then the whole safety depends on whether Durov made a deal with the secret police, or them infiltrating the servers to know everything about anyone involved. What they liked at what time, what pictures they shared…
That's not a possibility. Split-key encryption doesn't allow such a thing to happen.