People keep saying that. There are two problems with that, namely ① Google's own ads are easy to block using the new API and ② the new API is effective at blocking various evil attacks. If Google wanted to get rid of ad blockers, I'm sure they could come up with an API that does a better job than that.
Personally I believe that the browser is intended to defend against e.g. Facebook's apps. Google wants to make sure that if you buy a new device and it comes with a Facebook app preinstalled, it also comes with a browser. And that the browser isn't controlled by anyone who'd like to disrupt any of Google's many nice income streams.