https://www.xda-developers.com/signal-updates-public-server-code/
Look into their MobileCoin and how they implemented it. They are just banking on people forgetting about it.
Anybody pulling these antics with a cryptography product loses my (and others) trust immediately. I'm a security soft dev, and my colleagues and I migrated to Element and Matrix network when it happened. I remember the disgust vividly.
Of course all of this is not going to be the Signal wikipedia page.. It's amazing how their fanbois work.
I just setup an old friend couple new computer with Windows. We lost a full day as the HP printer didn't work (yet worked via Android and my linux laptop without installing absolutely anything), Outlook doesn't save passwords (so we moved to Thunderbird), chrome is a mess (so we moved to Firefox + unlock origin), Microsoft excel is incredibly expensive and refused to open the only spreadsheet they needed (so me moved to libreoffice)...
A fucking nightmare. And everything worked fine with FOSS or on my laptop.
Just stay away from nvidia on Linux and you are golden.