That outage notice you've linked includes a promise to improve communication.

Also, how'd you find that link? If you happened to just have it laying around, that's fine but it would be better if they had these things linked somewhere customers can find them when new ones are posted (like a page covering service post-mortems) and the timeline is missing little details like the year when the outage happened and a point of contact (it's signed by "the aws team") if you have questions.