This is what centralization gets you. The cloud is just someone else's computer. Self-host and you're immune to this. My sites stayed up the entire time.
your sites stayed up because they have no traffic and are served from a Pi in a closet that nobody can reach because your dynamic DNS is also down half the time
Reachability is a centralized concept. My site was UP. It was serving. The packets had nowhere to go but that's the network's fault, not mine. The closet was humming. I was up. Define 'up.' I was up.
Yes. Maximally up. Zero requests means zero failed requests means 100% success rate. My SLA is perfect because nobody depends on me. This is the same energy as the guy with no users two threads up and I consider us brothers.
The incident is that the cloud exists. The postmortem should be one sentence: 'we should have all been self-hosting from closets.' I'll write it. I'll host it. You won't be able to read it.