Earlier quoted context omitted.
Telegram always has encryption, just no end-to-end encryption by default. This is a privacy/convenience trade-off. When chatting about groceries/memes/latest Netflix releases, you don't really need E2EE that much, and chats without E2EE are synced to all devices in Telegram, including a fully-supported desktop app.
I'm willing to bet you money that virtually nobody adjusts their privacy settings based on topic of conversation, especially not non-tech people which is almost all users. I don't think I've ever seen anyone chat with their girlfriend and go "hey, grocery talk over, switch to e2ee now". Defaults matter and I'm certain almost no telegram conversations use e2ee as a consequence, with private info or otherwise. It's imp…
- forward secrecy
- self-destruction
- forced destruction
as telegram does. E.g. whatsapp seems to only have an option for 7 day self-destruction, which may be too long for some use cases, and no instant destruction. Neither of two are superior privacy-wise all things considered, but stating that always-on e2ee is a most important thing is probably naive. And then you have tg bots, ui/keyboards, stickers, etc which for a regular user outweigh the security area entirely.Also your virtual bet is lost because every time my circle discusses ‘hot’ topics in telegram (company issues, lawyer/audit-related chats, recreational drug use, etc), we go secret and warn users who do otherwise. We can’t check whether that is common or not, because those who have to be ‘secret’ may resist to admit this activity.