What killed it was not the deal. The deal divided the uses into a group that abandoned it, and a group that decided to support it. The author then decided to t

What killed it was not the deal. The deal divided the uses into a group that abandoned it, and a group that decided to support it. The author then decided to take money to not block the mild advertisers. Then he stopped blocking worse and worse ads. At some point at the last step, enough people left that he stopped developing and sold the extension. and then, the buyer decided to use the extension to gather user data to sell to advertisers. At this point it still had enough users to be worthwhile.