This is crazy
No browsers incognito mode protects you from tracking on the web. Incognito mode literally doesn't block anything not blocked in normal browsing mode. You just start with your cache, history, cookies, and things like local and session storage empty. As you browse these things fill up with data because disabling them completely breaks almost all websites. Then when you close the browser it clears the data stored locally out. All of the websites and ads you visited still have their copy of the data and if you logged into any sites like Facebook almost all of the websites know it was you browsing.
All of the people who want to sue Microsoft (Edge), Apple (Safari), Mozilla (Firefox) will want to go before this incompetent judge who is ruling on technology with little understand if what things mean. If you use a browsers private browsing/ incognito mode and visit a site especially one of their sites they will track you even if it's the minimum of what site link brought you there and what you did on the site, and if you login to one of their services they might (probably / most likely) associate the collected tracking data with you.
Now that sites are routing ads and tracking through their servers blocking third party cookies does nothing.
See:
- https://www.linkedin.com/pulse/straightforward-simple-server-side-tracking-guy-erez
- https://developers.google.com/tag-platform/tag-manager/server-side
- https://developers.facebook.com/docs/marketing-api/conversions-api/
- https://about.ads.microsoft.com/en-us/solutions/tools/universal-event-tracking
It's not just the big names doing this
- https://www.linkedin.com/products/magicpixel-server-side-tagging/