He explained in his blog why he doesn't like E2EE:
https://telegra.ph/Why-Isnt-Telegram-End-to-End-Encrypted-by...
Why Isn’t Telegram End-to-End Encrypted by Default?
Pavel Durov August 15, 2017
He explained in his blog why he doesn't like E2EE:
https://telegra.ph/Why-Isnt-Telegram-End-to-End-Encrypted-by...
Why Isn’t Telegram End-to-End Encrypted by Default?
Pavel Durov August 15, 2017