Explanation
No. A simulated five-hour outcome does not establish the Moon's actual formation time.
SwRI reports that its models produce different outcomes depending on the colliding bodies' temperature and material strength. One scenario produces an intact Moon in around five hours; others produce a disk from which it assembles later.
These results explore possible formation pathways. They do not identify which conditions actually existed or prove a single historical timeline.
Key takeaway
A model can demonstrate a possible pathway without proving that it is what actually happened.