- iOS 13.0 was so bad they released 13.1 in less than 5 days, but even now many things are still hit and miss (with 13.2 in beta)
- watchOS 6.0 is also still pretty bad and not yet fixed (with 6.1 in beta)
- macOS 10.15 GM seems pretty buggy
- Well, I think tvOS 13 is ok?
While the situation might be better for people who use the latest betas, it is still a horrible current user experience for all normal users just updating their devices.
Lots of cross-platform features introduced across these updates (like the new iCloud features and new Reminder apps, etc.) are also in a horrible state.
I'm not sure what their QA team is doing this year but it seems almost everything planned for this Fall would have been better off if pushed back a couple of months. Well, if it weren't for device compatibilities... (the iPhone 11/Watch 5 seemed to be more important than stable software across all their platforms and other devices)