I know I'm way late with this one, but the general consensus I've seen others make in addition to my own observations is that Google's decline began in the latter half of the 2010s. That was around the time I remember my search results getting less comprehensive, and when the Image Search function was irreparably neutered. Ergo, the timeframe of its decline coincides perfectly with their street-shitting CEO taking the reigns. People will always argue that correlation is not causation, but no one can convince me that these two facts are unrelated. Import the third-world, you become the third-world.