From that page:
The bitterest irony of it all is that if DroidScript had been running Facebook ads or Twitter (“MoPub”) ads or Tapjoy ads or anybody’s ads except Google’s, this never would have happened to them.
This should mean that with any other advertising provider you could publish a stupid app, run it and click banners 16 hours a day to make as much as Elon Musk, but I doubt it.
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The author doesn't know how Google detects that you have clicked too much in your app. He doesn't know that Google also knows how many times he goes to the bathroom.