Reminder everyone.
If someone use the term "root cause" unironically, *do not trust them to understand what lead to an incident* and more importantly, *do not trust them to understand how an incident work*.
This is a term and a model that is obsolete by decades. Using it and trying to find a "root cause" is well supported in the empirical research as a handicap at this point, alongside the other false friends of incidents like "Human Error".