alt Hacker NewsPreviously the clear target URL of a search result was added to the result-link (or div?) as an additional data-tag (aria or whatever, can't remember), and thus was able to be used with a userscript or similar to replace the Googleified tracking redirect link. And it was also part of the googliefied tracking URL, either way you were able to see the clear target URL.
That no longer is possible, you must ask google.com for consent to visit the result link before seeing what the final target URL is.
But the extension doesn't need to use that exact mechanism, and the person that linked it didn't mention specific mechanisms. The purpose of the extension is putting the real URLs back, and it can still do that.
And it can still prevent google from knowing which search results you click on, even though OP didn't mention that feature.