I think having very infrequent large long outages is the norm here actually.

I can't think of any company this size that didn't have some outage of this magnitude at least once.

Facebook BGP for instance, Slack in Feb of '22, Cloudflare in June, YouTube, Twitch, Sony PlayStation etc etc have all had incidents this wide and long.

Roblox had a super long one didn't they a year or two ago?

Yeah that one was like two or three days bc their Consul melted down. They had detailed postmortem posted