That ship sailed a long time ago. Signal's userbase overwhelmingly objected to having their sensitive information permanently stored in the cloud too, but signal ignored them.

https://community.signalusers.org/t/dont-want-pin-dont-want-...

Even when security concerns were brought up:

https://community.signalusers.org/t/proper-secure-value-secu...

... phone number use, lack of interoperability, keeping server source closed when it fits