I think this is a neat idea. Google has tried a lot of products and models, but "gamifying" (at least in this sense) search itself isn't one I can recall.
As a side note, I'm a publisher and Google Discover traffic alone has made me about $1k in the last week alone to just one single article by itself
https://developers.google.com/search/docs/advanced/mobile/go...
Some of the content on there is, however, fairly obvious clickbait, but there's also a super easy (working!) 'not interested' button in there.