Not directly perpetrating, but definitely enabling.

EDIT: Worse is that if you think about it, who is getting scammed? Is Amazon paying out more money by people doing all this crazy stuff with books? Probably not. So the scammers are scamming the real authors who aren't getting paid as much as they otherwise would for the real people who actually read their books.

Does Amazon have any obligation to ensure that pages read are real, or verified or whatever? Probably not. But it's definitely bad business, similar to how Google desperately needed to crack down on click bots for Google ads.