Comment by olliej

Am I getting this right?

Irrespective of whether you use any other google products, if you use chrome google can now track you over any property that uses google ads, recaptcha, etc.

The header is inserted by the browser after any extensions run, and google pins google properties so you can have an intermediate proxy that strips the header, so they gain persistent tracking of all users across most of the web?

If it wasn’t a tracking vector why do they limit it to just google ads, etc? Why not other ad providers as well?