“We’re aware of reports that access to Signal has been blocked in some countries,” Signal says. If you are affected by the blocks, the company recommends turning on its censorship circumvention feature. (NetBlocks reports that this feature lets Signal “remain usable” in Russia.)
The session keys for WhatsApp are stored on Meta servers, so the encryption is meaningless. Meta can read everything everyone types. Yet all of the eastern hemisphere seem to worship it like it’s pure platinum.