Sure, but these are all mere statements. You don't know if they fully back that until there's a public standoff with law enforcement/administration and there weren't any in recent years. Yet at the same time it's hard to believe there were no attempts from that government to decrypt some devices they needed. So the fact we hear nothing about it is also an information to me. Sure, this is all speculation, but all things considered...

Besides, they fully comply with Chinese requirements, so...

PS. Others report Filevault keys are also being backed to iCloud since September and they didn't tell anyone: https://sixcolors.com/post/2025/09/filevault-on-macos-tahoe-...