Not ambiguous at all. The DE is an app which does nothing more than launch content. That content is either KI, KI Classic 1 & 2, or the in-app experiences like soundtrack, bts vids, etc.
So, in-app experiences are not available on PC at this time, but digital purchasers still get the cross-buy benefits of KI (game). (Classics have always and only been Xbox One, so that’s why I am not counting them.)