This is for non e2ee cloud data. If you turn e2ee cloud encryption on, only you can access your cloud data. A government or police agency can’t access it, but you’re also kind of fucked if you need Apple’s support to access backup. So maybe leave it off for old parents.
https://www.apple.com/customer-letter/answers/
Quote below
Has Apple unlocked iPhones for law enforcement in the past?
No.
We regularly receive law enforcement requests for information about our customers and their Apple devices. In fact, we have a dedicated team that responds to these requests 24/7. We also provide guidelines on our website for law enforcement agencies so they know exactly what we are able to access and what legal authority we need to see before we can help them.
For devices running the iPhone operating systems prior to iOS 8 and under a lawful court order, we have extracted data from an iPhone.
We’ve built progressively stronger protections into our products with each new software release, including passcode-based data encryption, because cyberattacks have only become more frequent and more sophisticated. As a result of these stronger protections that require data encryption, we are no longer able to use the data extraction process on an iPhone running iOS 8 or later.
Hackers and cybercriminals are always looking for new ways to defeat our security, which is why we keep making it stronger.