It's pretty safe to say that most users will want a type of "backup" that actually leaves the device so the data doesn't disappear if your phone falls out of your pocket and breaks or gets stolen.

It's after all, a device that's carried around and much easier to destroy than pretty much any other.

For most of population (you know, the ones we all want to get onto Signal so they stop using Meta and Apple stuff) not losing their valuable pictures, memories and conversations is way above the paranoia of some theoretical government official deciding to give up while trying to unlock your phone.