Rigging Apple’s App Store ratings

Watch the video embedded in this tweet:

I’ve heard the argument that there are just too many apps in the App Store to police properly. But surely there’s some sort of threshold test, perhaps assisted by machine learning or some form of bounty or crowdsourcing, that would flag these sorts of scams.

And the bit about preventing someone from tapping a low star rating. A bad look. I struggle to understand how this is possible.