None of those are within the Developer Center. It's very possible for those to be up and running while dev portal is down.
Right, that page doesn't even have the capability of reporting this outage. Kind of makes it a bit unreliable as a status page, you know?
:| It doesn't make it unreliable as a status page showing the status of those things it's intended to show the status of.
No, of course not. It makes it unreliable as an indicator of the Apple ecosystem's platform status. Which would be fine, were this not the only such status page Apple provides.