MOST of the windowblinds skins are user created, NOT made by Stardock. It would be up to each skinner to update his/her skins, NOT up to Stardock.
Starbucks sells coffee. And it's good, but expensive.
Stardock's 'responsibility' is to update their programs to conform with the new OS releases [as and when that is possible].
The content [skins] has always primarily been created by the Skinning Community, not Stardock.
Where Skinners are continuing to create/upload works there will be content supporting the new OS versions.....
Now, re 'Starbucks' .... no, the coffee is utter rubbish - to the point where I fear Americans really have no idea what coffee is.
Certainly if you think that tasteless muck is coffee there is no hope for you...