You’re missing a key part of that article: > a good sleuth could construct a family tree and then conduct more targeted research that might lead to someone who

You’re missing a key part of that article: > a good sleuth could construct a family tree and then conduct more targeted research that might lead to someone who had never submitted his or her DNA for testing, as was the case with the Golden State Killer So this assumes the sleuth does “targeted research”. That’s only going to happen in things like criminal cases or other cases of big interest. It’s not going to happen to someone like me, an average Joe who has no one looking for him but is looking to protect his privacy by attaching a fake name and address to a DNA sequence.