"Governments can easily correlate GV numbers to mobile devices."

Google Voice doesn't need to be installed on a mobile device. I have my Google Voice accounts (yes, multiple) set to forward SMS to me via email.

"I personally no longer trust Signal. Moxie's departure stinks like a canary."

I never really trusted Moxie to begin with but events like this make me wonder all the more if Signal is really being run from Fort Meade. Fortunately for me I used Signal as my "non-secure" messaging platform and use other messenger options for secure comms.