[lutrinus]

As far as I‘m aware, Time Machine is a local backup which means the data never even reaches Apple‘s servers.

Additionally, you can and should encrypt your data which Apple allows to do using FileVault.

Again, the encryption key never even reaches Apple‘s servers except if you use the iCloud Keychain. And even if you do and you store your key there, Apple wouldn’t have the key for your iCloud Keychain and thus couldn’t do anything with that data.

[mFixman]

It's still a privacy nightmare. Your encryption key "never reaches Apple's servers" until the company that built your computer and signs your safe executables force-installs some binary that gives them data about every single backup you ever made.

Microsoft is not breaking new ground in killing your privacy. Customers already don't know or don't care that $bigcorp is watching everything you do and choose to give them all their data.