And now I exclusively use Firefox again.
Remember when google was cool?
Google also does this with Chrome. Users are subjected to "field trials". No explicit consent is requested. Most users are probably unaware. While it is possible to see which trials one is a part of, Google is not transparent about what exactly these trials entail.
https://www.ghacks.net/2013/04/05/field-trials-in-chrome-how...
https://textslashplain.com/2017/10/18/chrome-field-trials/
https://chromium.googlesource.com/chromium/src/+/master/test...
https://blog.chromium.org/2012/05/changes-to-field-trials-in...
If Bing's results aren't good, head back to the address bar and use another engine, if that's not good try another. So easy nowadays that it's kind of insane to me that there's still so many people who aggressively will ONLY use Google Search.
The problem with this kind of aggressive A/B testing is that it's a game of "how far can we push the user?" So instead of having enthusiastic fans, they have people who begrudgingly use them. Sure, Google picks up an extra nickel here or there, and I'm sure some PMs got a raise. But I don't know any strong Google boosters any more, and there are hordes of people ready to switch over once something tolerable comes along.
(And from the comments, it seems like many of you have already found tolerable replacement search engines. I think I'm going to join you.)