I actually left a top-level comment on this post that responds to the article in depth here: https://news.ycombinator.com/item?id=31557587. To be clear, though, we do block Microsoft 3rd-party cookies and their scripts are also further restricted in our browsers with additional web protections, e.g., fingerprinting protection, Global Privacy Control, referrer header trimming, etc.
What this article is talking about specifically is one web protection that the major browsers don't even attempt to do — stopping third-party tracking scripts from even loading on third-party websites. You can see that for yourself at the bottom 'tracker content blocking' section of this audit site: https://privacytests.org/ios.html
What this article is talking about specifically is one web protection that the major browsers don't even attempt to do — stopping third-party tracking scripts from even loading on third-party websites. You can see that for yourself at the bottom 'tracker content blocking' section of this audit site: https://privacytests.org/ios.html