Cool, so NOA do care? Who gives a shit. If you are in this thread to moan, that's...not helpful. at all. Anyone who wants to install this app do so understanding the possible risks.
I don't think that's the case. There are people who aren't aware that installing home-brewed could void the warrantee. Nintendo can choose to ignore or punish.
Just stick with Dolphin and keep your WiiU "clean".