SuperDuper 3.7 Beta 1
[Until] those problems are fixed by Apple, you won’t be able to boot from a backup.
[…]
That said, your Smart Updates are going to work fine, and remain fully restorable. As explained previously, you need only reinstall the OS and point at the backup when prompted to restore during first boot.
I want to highlight this because I missed it the first time. Starting with Big Sur, clones—even lacking the system volume—can be restored by the macOS installer. Previously, this was only possible for Time Machine backups.
In the meantime, we’ve been improving SuperDuper. We’ve worked around some issues with Google Drive (which was incorrectly protecting folders on drives it’s not operating on), significantly improved some corner-cases in Smart Update, and made changes needed to work well under Ventura.
Previously:
Update (2022-10-27): It’s out of beta.
