If the company doesn't get on the front foot to control the narrative, they will wake up to an email from a journalist saying that they are writing an article about 30pc cuts.
At that point, the journalist is likely to have heard the news -- and largely written the story. The company will be able to provide a quote, but by that point they will have lost control of the narrative. They won't be able to put their own headline on it -- as the start-up has done with this blog post.
One story becomes two. Becomes three. Becomes four. Etc. Then a media narrative sets in that the company is on the way to bankruptcy, etc, etc. Investors start calling the CEO, etc, etc.
I know that people find these types of announcements cringe and think that PR is a waste of time. But there is a reason most companies use this playbook: it is safer and it works (most of the time).
For the avoidance of doubt, this isn't a justification for all the language and messaging in this announcement, but a broader justification of the general strategy of communicating openly and in your own voice when you have bad news.