Discord is annoying af to use, slow and bloated like the rest of them. Really it all comes down to UX when anyone asks why use Telegram.

How is that any better? Still no e2ee, proprietary, arguably worse UX for chat purposes.

Discord and every other platform is much more willing to censor speech, even the ostensibly legal kind. Telegram's lack of proactive censorship is exactly why authoritarian cunts in Russia, Europe, and America have an axe to grind with it.