If you're using unencrypted messaging you should assume it's public. This is true of FB messenger and Telegram, but if I had to bet on what unencrypted content is more likely to be owned I'd bet on Telegram. This is mostly a bet on where the world's best security people are and the company culture.
Really though we shouldn't be relying on the benevolence of any of these company leaders, that's why people should use Signal or WhatsApp where the encryption means you don't have to (or Urbit where there is no central leader).
In short - you’re posting misinformation.
It also sounded like with Telegram there was some abuse of looking up or deleting other employees chats when threatened. The culture of the company doesn’t seem great.
All of this is kind of irrelevant though. The core issue is unencrypted chats.
My point is not that Durov sends data to Putin (I don't think he does).
My point is that there is a lot we don't know about Telegram.
When it comes to WhatsApp and all other Facebook properties we know a lot and much of what we know is ugly.
But yes, I should find a better way to phrase it.
That said, this idea
> I'd probably even trust FB's unencrypted messenger content to be better protected than telegram.
is ridiculous.
With Facebook you know you will be datamined and the result sold to anyone who wants to buy..
With Telegram maybe Putin reads it, maybe not.
One of them is a threat to my family and friends, the other is not.