What is Windows 8 "certification" that he's complaining about? Is it about adding it to the Windows Store distributed by Microsoft? In that case, doesn't it need to rebuilt with WinRT/DirectX?

Or to add it as a link to the developer's website like desktop apps can have in the Store?

The requirements are here: http://msdn.microsoft.com/en-us/library/windows/desktop/hh74...

Can't see anything really bad there, if anything those rules finally herd the Windows application cats.