this bullshit example gets trotted out every time somebody tries to prove this point, but it never gets any more relevant.

yes, google shows a lot of ads for a vague, contextless search query. but nobody ever searches for anything so vague unless they're trying to prove how google search results are going down the toilet. if you search for the name of a category of information, it's impossible to know what aspect is relevant to you and you're either going to get ads or irrelevant results, and google has chosen to serve ads instead of irrelevant results..

try searching for bitcoin mining, bitcoin exchange, etc, and you'll see relevant results.