so do we. Telegram's MTProto 2.0 has been audited multiple times by independent researchers, compared to WhatsApp's closed-source claims of E2EE.
I'd rather trust a company with a proven track record of no security incidents and fight for user privacy than a corporation which lies through its teeth time and again.
This is however something completely different from and largely orthogonal to "Telegram does not have access to their users' message contents".
The fact that they are consistently claiming the former and the latter makes them seem extremely untrustworthy to me.
Gaining my trust requires truthfulness and transparencies about the capabilities and limits of a service provider's technology (but of course is in no way sufficient).
The point is moot anyway. Everyone in Brazil uses WhatsApp. They will not use anything else. I'd be ostracized if I refused to use it.
Oh wow, they need to get that checked, could be pulmonary edema.
We do have at least some empirical evidence that WhatsApp is properly encrypted. WhatsApp's cryptography has made judges in my country foam at the mouth with rage so hard they ordered retaliatory nation wide blocks of the service at least twice.
People are right to distrust Meta but I for one am glad that everyone I know is using WhatsApp. I also have Signal and Matrix but a grand total of zero people message me through those.