I mean, imagine the repercussions of allowing third party apps to do this. It's tragedy of the commons for health info.
i.e. A crappy mobile app that spams notifications when you're around someone who was in contact with Covid infected. One which doesn't have any oversight and motivation other than mobile ad views.
It means scammy apps will spam contact notifications without proof just to get eyeballs, and that's on top of the ones using covid fears to phish for info. Bad actors will exploit this.
i.e. A crappy mobile app that spams notifications when you're around someone who was in contact with Covid infected. One which doesn't have any oversight and motivation other than mobile ad views.