Please, mate, this is just populism what you are doing there.
But it doesn't matter where they happened since I already know that I am carefully avoiding risky areas. I am sitting next to my window when working and people walk past that window within 2 meters. That alone could set off exposure notifications. Or maybe someone across the aisle in the supermarket?
Would I not go to the supermarket if I know it happened there? Would I not go for a walk if I knew someone 8 meters away from me on some bench was later diagnosed with COVID?
It barely serves any purpose at all outside of curiosity. The app already tells you everything you need to know.
There's a difference between what you share willingly and stuff being collected on you, especially in private matters.