Can you explain more of what you mean by "wild" here?
I never worked on any SaaS that had such high uptime. It seems pretty good to me. In 10 years, it was always better than 99.5% uptime. That seems impressive to me for a huge, complex SaaS like GitHub.
I might be wrong, but isn't half a percent almost 2 days of downtime in a year?
Or 7 minutes a day.