Is not Signal inferior? In Telegram you can communicate with strangers without disclosing a phone number, in Western messengers until recently you had to disclose it so that your contacts can conveniently find you and punch you in the face if you are a man or just annoy you with indecent messages if you are a woman (probably not scary in a country where everyone has a gun and every home is a castle, but not all world is like this). What Western genius thought of such a feature, displaying a phone number in a group chat?

Telegram also allows to delete any chat in one click. Telegram has support for HTTP, SOCKS, MTPROTO and WEB proxies to evade censorship, Western messengers do not. Telegram is written in C++. Although it is a piece of proprietary garbage and might be connected to the government, at least it is well made piece.

Also it became difficult to register in Telegram, it often asks for 1 euro when trying to register with a fake number. And with a real number the OTP code simply doesn't get delivered to Russia.