I don't think this is a fair use of the word "normally".

The service may have been working within SLA. Based on the data in this article, it was not working the way it works most of the time. I think most people would interpret "normally" to refer to the latter.

Or, let's drop the word "normally" and take a step back. A good dashboard should be designed to inform. Amazon's dashboard was not providing the information that Ably or their customers needed. And this isn't an isolated complaint; if I had a nickel for every time someone had complained about the green mockery of the AWS health dashboard, I'd have... well, several dollars, anyway.