it’s hard for me to read something like this and believe you aren’t being deliberately misleading.
All this stuff is only stored in an encrypted form that signal never has the keys for.
The fact that's encrypted doesn't matter. There are a number of potential issues with collecting it in the first place. You can see some of the security concerns which were brought up on their forums here: https://community.signalusers.org/t/proper-secure-value-secu...
As far as I know, they encrypt the data in sgx enclaves which are notoriously leaky.