Having a fully up to date status page is what prevents useless repetitive cases during degradation or an outage. If I'm having issues but you show all green, I'm submitting a case.
For large incumbents, publishing a complete and accurate status page might not only be a recipe for bad press, but also lawsuits. There's significant downside and not much upside to telling the whole truth. It's entirely unsurprising that cloud providers like AWS or Azure would play definitional games w/ what constitutes an outage. Rolling 5m, 1% outage across your entire customer base? That's just a hiccup! If your staff has to field more confused questions and complaints, it's a relatively small price to pay.
