**Apple Watch backups** are not working, they never did. This is what I see on my iPhone now, two old backups, once probably worthless because of it ridiculous small size. Another proof: after unpairing my Series 6 this morning before going to the Apple Store to get a credit for it[^1], no sign of new backups in the Watch.app. Big fail Apple. We are at Series 10 / iOS 18 for fuck sake!
[^1]: I'm upgrading to Series 10.