Not sure why Tucker didn't ask the most obvious question: why isn't Telegram #e2ee by default? At least for one-to-one chats.
Discussion
They've answered this before. Their reason is that it prevents carrying chats over to multiple devices.
Yes but doesn't encrypted backup and restore solve this? Anyway, hopefully they prioritise privacy over that...
No I'm talking about using the same account on multiple phones at the same time. If you go into a "secret" chat (encrypted) it only shows up on one device. They're not doing it like WhatsApp yet where it relays the messages.