Signal is the better option for true end-to-end communication, regardless of the rest of your concerns.
I don’t know what you mean by “better” but Telegram gives me no tech heartburn.
I’ll stick with Telegram b/c a lot of prominent Trump people are there and until the Trump leadership settles on a platform of choice.
Here’s another formerly trusted internet presence I and millions took as an article of faith until it revealed its true colors:
Mozilla Threatens To Go Beyond Deplatforming In Creepy Statement