This isn't a new thing. Amazon hasnt allowed installable software (without prior approval) nor have they allowed price comparison sites for years and years and years. Actually, have they ever allowed it?
But it used to say: "You will not include on your site, display, or otherwise use Special Links or Content in connection with any spyware, malware, virus, worm, Trojan horse, or other malicious or harmful code, or any software application not expressly and knowingly authorized by users prior to being downloaded or installed on their computer or other electronic device." https://web.archive.org/web/20130401033525/https://affiliate...