Yep, that's correct. Only a single origin is supported. The implementation on the backend server/proxy may use a lookup list, and return the specified origin if that exists in the list. As called out in the post too, * is a valid one (as is null) but is not recommended.

Did you have any evidence to back up your theory at the time? A broken clock is right twice a day after all.

Are you saying we should now listen to every conspiracy theory on the internet on the off chance it might be right?

Plus Cloudflare Pages is in beta too, CloudFlares JAMStack offering to compete with the Netlify and Vercels of the world. https://pages.cloudflare.com/