In The Business, we call this "piracy". Unless, of course, the developer is an altruist who did not intend to monetize their app, but accidentally dropped in an ad window.
Like web browser ad blockers, I expect that developers will ignore this UNLESS it begins to eat into their general user base. Then will come the code libraries that try to guess whether the permissions are accurate or not (e.g. timeout on internet connectivity downtime).
Or fewer free apps, I suppose. Either solution fits the new game theory equilibrium. My money is on "Google is not going to martyr their ad-supported app developers by rolling this into their Android OS builds", with a distant second to "faux-permissions detection libraries".