Based on that status page and the list-serve email link you posted it seems like they still don't understand what's going on (if that email is correct).
It seems to be standard practice to be as fuzzy as possible during an outage, and only share details later. Probably avoids anyone looking stupid if the initial hunch turns out to be wrong.
Many outages are caused by malicious actors attacking your infrastructure. This cause may not be apparent at all until much later.
It's better to avoid leaking any information in general during the incident, as it's often not immediately possible to know whether a hostile adversary exists, nor what advantages the adversary might derive from detailed updates during the incident.