signal and telegram are a no brainer when it comes to totalitarian regimes. i live in Kashmir which has historically and continues to hunt down dissidents with agility. i cannot imagine being tied to my "mobile number" when the government has that data by law, tying a telegram/signal account to it is a gone case by that point.
people who go with signal call it "better whatsapp without facebook tracking" but just like telegram, its Achilles heel is mobile number requirement. matrix has that from the start so its better in that respect. sure, matrix does not have "social graph" out of the box but in a "totalitarian regime", that is precisely what you want.
besides, you can set up your own matrix server, something whatsapp/telegram/signal simply cannot do so its 100% more secure in that sense
people who go with signal call it "better whatsapp without facebook tracking" but just like telegram, its Achilles heel is mobile number requirement. matrix has that from the start so its better in that respect. sure, matrix does not have "social graph" out of the box but in a "totalitarian regime", that is precisely what you want.
besides, you can set up your own matrix server, something whatsapp/telegram/signal simply cannot do so its 100% more secure in that sense