This is a categorically false premise. The kind of statement that only makes sense when you're in a deep bubble and entirely removed from the average person's use of the internet.
Deliberately removing yourself from Google is fine for the author who is more concerned about taking an ideological stance than they are about being discoverable, but removing yourself from Google is terribly bad advice for anyone who wants to help people find their content.
Many people do use Google to find content and people, even if you don't.
This is accurate, somewhat. A lot of people do expect to find things of value when the use Google to search.
But people who are more technical know it's a bit of a faff and bother to get Google to spit out what you're actually looking for, outside of "who is Chloe Grace Moretz" or something equally banal.
And Google-the-Company does treat the Internet like it is their corporate property. Alphabet won't change unless it's made to do so.
Any legacy web entity is at risk of disappearing sooner than later, because most actual web trafic (that isn't bot made) is driven by people born after the web was created, who couldn't care less about why and how the web came to be. They are running with it and breaking it (as well as other things) as they see fit.
Google et al. is already that irrelevant, old, rotting and decrepit thing from ancient history. Unless Alphabet can pull some new trick without killing it first. Thanks for the ride. That's the message here.