"Better" is subjective. I've been using iOS 27 beta and other than a few bugs it hasn't been that bad. I only had some minor downgrades in Safari UI, but those are minor and personal.

One thing I hated was a downgrade in Photos app on iOS 26 though, that hasn't improved in 27. Unfortunately it seems I was the only one loving Photos on iOS 18.

I did jump from macOS 18 to macOS 27 beta though and Safari's UI is abhorrent.