Not only is it apparently banned from the store, but also it's being removed from existing user's machines, on top of not allowing new installs.
Edit: Going to quote my thread from that discussion as this announcement confirms they were banned over the single use policy...
> Other ad blockers "block ads" and "block annoying eu cookie notices". Should they be removed?
> I just visited the Chrome store and chose the first extension: https://chrome.google.com/webstore/detail/office-online/ndjp.... It makes word documents AND spreadsheets?!
> Hopefully you can see where I'm going... whatever's written in the policy is difficult to enforce literally. Someone has to make the distinction based upon the intent of that policy. A person has to draw the line. If Google have made the decision based on that policy, well that's their decision.
> Reading https://developer.chrome.com/extensions/single_purpose (part 4) makes me thinking "disrupting ad networks" could be that single purpose. Then it'd cover blocking & clicking. Just like "Office Online"'s "edit office documents" covering both "word processing" and "spreadsheets".
> AdNauseam, a not-for-profit, research-based privacy tool, hides and clicks every tracking ad that it identifies in order to resist the opaque collection, analysis and monetization of private user data, and to challenge the intrusive and unethical business model that currently dominates the web.
Ital. gives you the justification Google could use to block the product. "Disrupting Ad Networks" is the single purpose, but while "Ad Blockers" are a simple nuisance to Ad Networks and 3rd party revenue streams, "Ad Obfuscators" poses a threat to affiliate marketers and resellers who may interact through Google's channels.
(In my opinion.....) Is AdNauseum justified in their work? ABSOLUTELY YES. But there are other hands at play. This also explains why Google is working so hard to block updating or new installs of it.