Google achieves the same end-effect with Gaia ID, where the Google-account on Chrome by-passes the need for this clever mechanism.

(In fairness, they're resorting to this hack on other browsers.)

Discussion (281 points, 14 hours ago, 207 comments) https://news.ycombinator.com/item?id=44169115

So if Google just puts Meta stuff into appropriate sandboxes, because they have proven since their funding, that respecting laws is above them (and courts have proven that they are clownshows), everything is solved and user data doesn't get leaked and abused left and right. The technology has always been there on Android. It has just been more profitable for Google, to allow abuse to maximize profits