If I recall it correctly this is intended behaviour and no problem as long as the fingerprint is random every time. So for example if I visit YouTube today, close the browser and visit YouTube again tomorrow there should be different fingerprints. They are unique but as long as they don’t stay the same you can’t be tracked with it

I recently saw an app that has one-to-one chat interoperability. As far as I remember the EU law has a transition phase where first there has to be a way for one-to-one chats and later for group chats. But the group chat deadline is still not reached