The way I read their complaint was that they should have something on their website to indicate they were down. Anyway, at the time they complained, the status page also already said that the issue was identified and a fix was being rolled out.
Then there was the CTO's (appreciated!) comment prior to the status page's second update with information suggesting this would be resolved soon (which IMO is the information everyone needs to report back to clients, bosses, etc).
That the status page was subsequently updated prior to OP's complaint isn't really relevant. It's still a point of discussion, whether someone comments immediately or later, right?