The short answer to your (perhaps rhetorical) question is: Yes.
The paradox is this: If it’s just a simply explicable error, it should only take ATSB a very short time to find that out and report accordingly. Investigating ostensibly simple incidents, and near misses, is important. That’s because of the word “ostensibly”. This has been learnt before.
You’ve evidently done your own investigation and ascertained the facts. What’s your explanation of the cause?