This includes if you are 301'ing old pages to the homepage on an expired domain.
Can we please cut the conspiracy stuff? There is no Google conspiracy. At all. They don't randomly penalize sites. They aren't checking chrome. They aren't trying to force a few SEO's to use google ads. They are not trying to make some extra cash for Christmas as some have said. Google's parent company, Alphabet has $117 billion in cash. Well, sort of. That's what they say on the web for shock value.
They actually have $148 billion in what we call "current assets", which is an asset that can be liquidized in 1 year or less. Actual cash they have $16 billion, so they won't go hungry this week however.
Now, with that in mind..
Does anyone of sane mind really believe a company with that level of assets is instructing the engineers of their core business to make radical changes so they can get a bit of extra cash for Christmas? Or maybe to get a few more businesses to sign up for google ads. It's just utterly ridiculous. Their decisions are made with careful consideration with the goal of improving their core product to maintain their market share. They aren't even attempting to increase their market share. It's not increased for over a decade, and is a little lower than it was 10 years ago. Their sole goal is to maintain the dominant position by making sure people are happy. That is their mission. If they fail in that mission they are done. They would not fuck around with the serps to drum up a little more ads business. Great move. Risk your core product just to get a few more small businesses to buy ads.
Now please, folks. Enough of the conspiracy stuff, it's just embarrassing to read.
We are all just trying to work out what's going on in this update. All my sites and sites I'm responsible for have continued to grow. I've never actually been hit with a google update, but I do try and stay ahead of the curve by understanding each update so I can see the direction they are moving in.