As long as your messages are end-to-end encrypted, I don’t know why you would care about that. It’s proven that they do not collect any metadata that could harm your privacy and most of their stuff is open source. The signal protocol is a pretty solid protocol supporting E2EE. There are not even cloud backup options, so your messages can never be read from someone other than you and the receiver, unlike something like iMessage that has cloud backup option that backups your messages stored locally on your device probably in plain text to iCloud.
Signal is based in the US. Better to use something that is not based in the.US.
As long as your messages are end-to-end encrypted, I don’t know why you would care about that. It’s proven that they do not collect any metadata that could harm your privacy and most of their stuff is open source. The signal protocol is a pretty solid protocol supporting E2EE. There are not even cloud backup options, so your messages can never be read from someone other than you and the receiver, unlike something like iMessage that has cloud backup option that backups your messages stored locally on your device probably in plain text to iCloud.
It takes just one FISA court order to compromise Signal.