Why is Telegram horrible

--No MetaData Protection
(Who and When)

--Only Mobile is Encrypted
(Phones have insecure hardware) [1]

--Invented their own encryption algorithm
Unaudited with a history of security vulnerabilities [2]

--Most VoIP Numbers are Blocked

--Tor Often Blocked

--History of handing over to police [3]

--Centralized

--Forced Google/Apple Stores
(Telegram requires Google Push which is closed source,
So the binaries can't be compared to the code,
and therefore, Telegram's claim of "open source" is a lie)

Your friend will try to pressure you, claiming you're a fringe minority.
But if you repost this, we can be the majority.

(Sources linked in comments)