Comment by 33MHz-i486

I would speculate this is about the costs that (a weakly safeguarded) Mythos imposes on them. Amazon is, among other things, a net guarantor of cyber security for AWS customers (large enterprises and government entities). Taking a ~10e7 server hardware fleet from a patch SLA of weeks/months to 1 day is (1) very costly for them (2) may not be feasible in short time frames due to the amount of additional capacity needed for larger, more frequent reboot waves