I don't have a device to test on, but I'm half-remembering from long ago that I can hook up a new (or found/stolen?) iPad and be offered the opportunity to do a backup on it.
If that is not the case, then the new Ventura feature that demands a passcode on the iPad is a useless inconvenience. But if it is the case, it fixes a serious security flaw.
Before, if the backup is not encrypted, then I could (and did) access any file on the iPad by getting into the backup.
Is my memory wrong? Or if the iPad never had a lock code set, is there still a risk?
There are suggestions of another question that does partially answer that it is/was a security problem. But "is X a security hole?" is not a duplicate of "How do I turn X off?" Also the other doesn't answer whether the vulnerability still exists when the iPad never had a security code set. Also, the CVE cited says that applications can get into the backup while I noted over a year ago that a human (me) can get into it. But I guess Finder, Terminal, and SQLite are all applications. (I used SQLite, but I could have used Finder or command line.)