Do others on HN not quite see the harm here? I think ultimately I don't know why (morally/legally/etc.) one is entitled to have absolute privacy over one's DNA. If you leave your DNA somewhere I don't see why others couldn't take it. Similarly, people have a right to ID others by people's face. This is just slightly more nuanced.

I see huge upside (as mentioned in the article it is becoming harder and harder to get away with vicious crimes) with limited downside.

I know it sounds/seems unnatural to be identified by your DNA, but what is the actual worst case scenario of this?