I heard this years ago from someone, but there's material impact to a company's bottom line if those pages get updated, so that's why someone fairly senior has to usually "approve" it. Obviously it's technically trivial, but if they acknowledge downtime (for example, like in the AWS case), investors will have questions, it might make quarterly reports, and it might impact stock price.

So it's not just a "status page," it's an indicator that could affect market sentiment, so there's a lot of pressure to leave everything "green" until there's no way to avoid it.