I've never actually seen that status page before, and I'm not clear what it's measuring. My company pays for Enterprise Cloud, and we see all the same downtime as what gets posted to https://www.githubstatus.com/

That is the ghe.com status page, which it seems like no one actually uses, hence the good uptime. Most Enterprise Cloud customers don’t use it.

https://docs.github.com/en/enterprise-cloud@latest/admin/dat...

No the Enterprise Cloud is just the same GitHub.com with the same shitty reliability.

However the newer Enterprise Cloud with Residency (aka on Azure) is a separate partition and has a different reliability domain (still subject to Azures bad reliability so not an entirely compelling offer). This is what you linked.