Thanks, as always, for the feedback and for proposing alternative solutions.
To answer @AnotherElk’s question about whether switching the A/B slot back to the OS state prior to the update could be made a part of internal testing. This is not a possible solution and is in fact, not recommended by Google because it might cause data loss. We also have Verified Boot installed which includes rollback protection. This is a protective measure that records the most recent version of the Android and refuses to boot Android if it’s lower than the recorded version.
Hope that clears it up a little! If there are further questions, of course feel free to give me a shout too. 