Well it could be seen as a slanted and prejudicial kind of slander, to imply that Apple and others like them are predatory creatures playing on Human weakness. It could be say to be unrealistically insulting to Apple, its ilk, and to consumers as well in calling them unconscious dupes. If the app presented the alternative view as well, that some of us consumers may actually willingly and with awareness take part in the sharing of products with the caveats of advertisements, exploitation of workers, mining of rare minerals and all the other attendant issues, and in spite of it are still good-spirited individuals, merely having fun within this echelon... Well, Apple is fulfilling a dream of mankind, so why not at least give them the benefit of the doubt? It's a hard position for Apple to be in, having to acknowledge this product as plainly mean-spirited. But I suspect other mean-spirited apps have also been blocked - Dartboards with the faces of politicians and things like that... It's a fine line and a hard call, and maybe there's some flak deserved for coming down on a sketchy line. The app could be seen as kind of satirical, but it's possible the detailed content has a nastier spirit than the plain idea we have so far discussed.