Google has policies for the Chrome Web Store and this extension doesn't abide by it. I have highlighting just a few points below.
People usually are nice to each other and abide by them. This is why we can have nice things.
# [Developer Program Policies](https://developer.chrome.com/webstore/program_policies)
1. We don't allow unauthorized publishing of people's private and confidential information, such as credit card numbers, government identification numbers, driver's and other license numbers, or any other information that is not publicly accessible. Additionally, we don't allow items that collect, store, or transmit user credentials or other private user data in an unsafe or unauthorized manner.
2. Spyware, malicious scripts, and password phishing scams are also prohibited in the Chrome Web Store. Where possible, make as much of your code visible in the package as you can. If some of your app's logic is hidden and it appears to be suspicious, we may remove it.
3. Your app must comply with Google's Webmaster Quality Guidelines.
4. Don't misrepresent the functionality of your app or include non-obvious functionality that doesn't serve the primary purpose of the app without clear notification to the user.
5. Forcing the user to click on ads or submit personal information for advertising purposes in order to fully use an app or extension provides a poor user experience and is prohibited.
# [Webmaster Guidelines: Quality guidelines](https://support.google.com/webmasters/answer/35769?hl=en#3)
Don't deceive your users.
# [Unwanted Software Policy](https://www.google.com/about/company/unwanted-software-polic...)
We’ve found that most unwanted software displays one or more of the same basic characteristics:
* It is deceptive, promising a value proposition that it does not meet.
* It tries to trick users into installing it or it piggybacks on the installation of another program.
* It doesn’t tell the user about all of its principal and significant functions.
* It affects the user’s system in unexpected ways.
* It is difficult to remove.
* It collects or transmits private information without the user’s knowledge.
* It is bundled with other software and its presence is not disclosed.