FWIW, my usual platform for most things is Xubuntu Linux and I never see probably Bing from there. AFAICS, swapping to a Mac just means swapping Bing tracking for Apple tracking.
Different levels of reality, with the same relevant choices available.
The default Mac browser is Safari, which offers this choice of search engines:
Google
Yahoo
Bing
DuckDuckGo
Ecosia
I think you missed his point. I think he is talking about the OS not the browser.
Apple vs MS .. both track you
Browser tracking is a whole different issue
If you get Bing tracking out of your life by going Mac, you get Apple tracking instead