This includes phenomena such as polarizing news causing social strife. If we simply took the time to understand how things are connected as well as how things are not, we would not so easily fall victim to propaganda. We can't just use the excuse that since Google knows our search history that we have no control over whether we are polarized. We also can't assume that once we de-Google our lives that we are any more properly prepared against polarizing propaganda. Lessons of mindfulness toward our neighbors' struggles don't come for free.
On top of that, the author of the linked blogpost is fooling himself. Other than halfway proving a point, he hasn't solved much. By continuing to use Google Maps he essentially makes a great deal of his online activity discoverable, undoing much of his work to "de-Google" his life.
Furthermore, Google has settings to blunt ad targeting, which seem quite effective, and you'll end up learning about CNC machines and dental drills in between your YouTube binges. If there was someone I'd accuse of dark patterns with ad targeting, that someone would be Meta.