There is irony in complaining about over-communication when it's in response to criticisms of under-communication.

Key word "spamming." It wasn't communication but another dry and information-free blob of text. Communication requires something to say.

It's worse than that, they're saying communication was not up to their standards without actually communicating anything we didn't already know.

At least explain why there was such a total communication blackout company wide. Even support staff weren't allowed to discus it. Why?

Well why are they writing a blog and posting the link on HN? We’re not directly your customers. Did you apologise individually to the customers you ignored? You don’t have to apologise to anyone here.