Yes, and now I remember that there was a problem with one of the examples using “rule succeeds” to stop an Every Turn rule and thus breaking the rest of the Every Turn rules. So the documentation is probably saying something like “The every turn rulebook doesn’t have outcomes, so it doesn’t matter whether you mark it as a success or a failure, it’ll just stop the rulebook.” But it’s far from clear.
Anyhow I filed the bug.