Telegram, which ostensibly claimed to provide e2e but really only did in very specific circumstances? My right wing uncle is still bitter about that. Then there's the rolling over the founder did after getting pulled up by Interpol.
Maybe you don't believe Durov's statement[0] about it. But is there any actual evidence anywhere that they've ever violated the secrecy of non-e2e private groups or messages for anyone? I've yet to find any.
That wasn’t the original question though. Twitter and Messenger are also untrustworthy. Telegram’s message export is very good compared to all the other options.
I'm not sure why anyone would trust Telegram.