He precedes his description with a nod to XP, but I still think calling these three activities "phases" is the right terminology if you're doing iterative development. The part about burdening the design phase with development doesn't make sense either.
"I'm editing this in the e text editor, a Windows clone of TextMate, which is coming along nicely but could still use some polish before I'm ready to switch to it full time."
Oh snap, he's not using CityDesk anymore! Take that, Visual Basic 6!