Do you truly believe that the turnaround time for you contacting support, speaking to a first-tier support agent, having the request escalated to engineering, having a support engineer triaging it to the right team, and finally having the report being gauged so urgent that it pages the oncall for that team, is faster than automated infrastructure monitoring that the teams already have?

For something as core as DNS, I'm sure engineers were aware about the issue within minutes. There's a lot of politics and processes between that and public acknowledgment of an incident.