out of the loop, what's the problem with signal?

https://lemmy.ml/post/44783431

i’m concerned that they require phone numbers and host on AWS, and don’t have a clear monetization scheme. but for now it seems reasonably secure.

The signal protocol is end-to-end encrypted, not even signal themselves knows what is being sent to what.

en.wikipedia.org/wiki/Signal_(software)?wprov=sfl…

Signal (software) - Wikipedia

As I understand it, while they can’t see the contents, the Metadata is still exposed.
Isnt the metadata also encrypted?
Your phone number is the biggest metadata you could possibly give (it means your real identity, including your current address), and signal has it.