Earlier quoted context omitted.
I've been noticing it for a while, the search quality gets worse and worse every year. For me, the red line was the Panda update in 2011. That update completely destroyed the search quality by bringing dubious quality news articles and ecommerce websites on the top of search, it never really recovered since then.
At this point, I basically have to append "reddit" to every search if I want to get quality answers.
I loved how Google used to find high quality discussions on all sorts of niche topics (tech, gardening, science, diy...) on sites like MetaFilter and Reddit.
Now those queries seem to lead to mostly videos, low quality sites, and shopping sites.