I use the android app quick novel which uses a bunch of sources

isnt signal a nonprofit? not a corporation

From what I saw it was quite left leaning when I used it

There’s a beta you can try using a test branch app on their staging servers, you’ll need to make a new account with your number again and there has been issues where its leaked your number

Depends which hard left, I know hard/far left people who hate them

I’m fairly certain the whatsapp matrix bridge supports end to bridge encryption

Yeah that’s one big hurdle to get past sadly, it’s like getting people to switch to a new chat app “no ones on it I talk to so I’m not bothering”