[0xy]

The Google Drive option is the default on the numerous nag screens, therefore it is default behavior.

Regardless, chances are your contacts have enabled the Google backdoor if you haven't.

>WhatsApp is vastly superior to Telegram in terms of E2E encryption

That's why CVE-2020-1910 enabled attackers to steal your entire message history with a single image message. Has Telegram had similar catastrophic E2E exploits? Nope.

>Telegram can read users messages on their servers

Google has your WhatsApp "E2E" private key by default -- meaning it is NOT end-to-end encrypted. Telegram's E2E Secret Chats have no such backdoor.