Insecurity: different issue entirely, though I generally agree. Mobile platforms are an extremely active battleground right now, though.

Not sure what the valid point would be. "Where this is going"? It's not going anywhere. A similar rule exists in the Mac App Store guidelines... both of which merely mean you can't cite other OSes in the app store. The app can internally / on their site advertise that they're also on Windows, just not in the store. It's not a very surprising requirement, as it's a locked-to-a-single-OS store, and it's easy to get around if your app has any purpose aside from advertising the competition.

Putting the magazine as an app on the store would be nigh-impossible, because you couldn't mention its primary purpose, but it'd likely get by with no issue if such a thing were achieved without being misleading.