There has been a lot of talk about the quality of google's search recently (e.g. https://twitter.com/paulg/status/1449720446379872269?lang=en), and how it has gotten worse. I personally wrote it off to the inclusion of BERT making results better for the public but worse for certain groups like the HN crowd... but now I'm wondering if there could be a strategic purpose.What strategic reason could Google have for making their search worse?