That patch is manually added. Moreover, some apps have hard binding with their id, making the situation more complicated. Kiwi is not on f-droid at all. They host their own version. It might be easier for the app authors to do it. But f-droid maintainers don’t have this capacity.

The thing is that changing the app id requires too much patching to thousands of apps, and the users will not be able to migrate from the current f-droid version.

Good to know that they have first-class Linux support.

For those who haven’t read the article, the suggested solution is for advertisers to obtain similar user IDs by using their own user list; it has nothing to do with gathering user data from the browser.

It is utilized in conjunction with other differential privacy technologies that gather user information and classify users.

In fairness, Mozilla needs a means of making money if anyone hopes Firefox or Librewolf to exist in the long run.