Google is so unbearable because they are no longer interested in you finding the answer to your query; they're interested in selling your query and its context to the highest bidder. That conflict of interest manifests in what Google has become.
There are only two choices. Either Google are no longer interested in finding the best answers to your queries. Or as you point out: They don't care, that is no longer what they do. I cannot imagine it being easy, but I find it hard to believe that Google aren't able to weed out the worst offenders. For a large number of queries the results are all SEO spam. Try searching for anything related to health and get a usef…
Medicine researching on the internets always was among the hardest topics. And anyone who really understands Medicine has to write on any advice not to consider it as a real medical advice... I agree that google has degraded down to unusable in comparison to non-global searchable websites (like SO) but Medicine is very bad example to your point.