All this is just wrong. I wonder why HN likes throwing up wrong information about Telegram as fact. Is taking up 5 mins to proof these claims that hard?

> 99.95% of messages on Telegram stored as plain text on their servers and only encrypted between client and telegram server.

Wrong and OP doesn't even mention plain text. The non-E2EE client-server data is stored encrypted sparsed out in various servers to different countries. https://telegram.org/privacy#3-3-1-cloud-chats

> End-to-end encryption only working for 1on1 chats, not available half of their clients and have terrible UX.

Wrong again. I actually recently checked this for myself their official clients on Android and Linux desktop have support for MTProto 2.0. Feel free to check if other OS don't support this feature. The only clients I know where this is not enabled are the web clients.