Many in the crypto and privacy community mistakenly trust Telegram because it’s “end to end encrypted”, but there are huge issues including not hiding the metadata, censorship, centralization, and phone numbers.
Send this video to your friend that asks why you won’t join:
https://video.simplifiedprivacy.com/why-telegram-sucks/
I try to explain that to people all the time, they only use E2E for so called secret chats and comply with every country as soon as a ban is on the table, there are even reports about a case in Dheli where they did so for Audiobook piracy!