

Crucial detail:
The backup archives are “stored without a direct link to a specific backup payment or Signal user account,” O’Leary says. You’ll use a recovery key to unlock your backups, but if you lose that key, the company “cannot help you recover it.”
And this reader comment was clarifying IMO:
This solves a user issue of changing a phone and their Signal message history is just gone, which to normal users, is not acceptable.
Keeping them definitely seems to increase possible risks, but for most people this is a requirement, so good move on their part (guessing it’s optional) - when it’s rolled out.
Some interesting thoughts - and questions - here. Seems you posted them in the wrong place, given the paltry response. Or possibly at the wrong time (i.e. 6 hours after the herd had moved on, a perennial problem with social media).
XML is space-inefficient with lots of redundancy, and therefore considered to be ugly. Coders tend to have tidy minds so these things take on an importance that they don’t really merit. It’s also just fashion: markup, like XML and HTML, is a thing of the 90s, so using them is the coder equivalent of wearing MC Hammer pants.