I am not a fan of AWS due to their substantial market share on cloud computing. But as a software engineer I do appreciate their ability to provide fast turnarounds on root cause analyses and make them public.
This isn't a good example of an RCA - as other commenters have noted, it's outrightly lying about some issues during the incident, and using creative language to dance around other problems many people encountered.
If you want to dive into postmortems, there are some repos linking other examples