I don't think there are easy answers here, but it's a conversation we should be having.
If you give anyone (say, PayPal) your address, you’ve given then your roommates’ address as well - since you share the same IP. Nobody cares, even though the third party can immediately begin identifying your roommates without harvesting their DNA, like they would in the case of 23andme.
There’s a slight difference.
I suspect you’re attacking a strawman.
Edit:
Or, by the same token: a parent is liable for diluting the value of their siblings DNA because they passed that DNA on to children. I don't see this going anywhere.
It's like sharing your private key, knowing that others also use that private key.
You immediately make a large portion of your family tree discoverable.
It's the same underlying reason that we (most of us lol) treat revenge porn as a bad thing. You take someone else's blanket of privacy away without their consent.
- https://you.23andme.com/user/edit/privacy/
There is also the danger of people having a false sense of privacy by opting out of 1 or 2 genetic tests. This is shared information between relatives and the population at large, not exactly top secret data. The degrees of separation between you and me are 2-3 , so it s very easy to identify people indirectly , hence why it was possible to solve decades-old crimes.
I think our genetic information is less private than the contents of our brains, in general.
And as a side benefit, through this system I got to meet my second cousin and tell her what my mother remembers about her now-passed-on grandmother (that literally happened last night and I'm still excited about it).
I am a bit nervous about some of the 'we found the criminal by searching the company's DNA database' stuff. I think some regulation around that is needed. And perhaps 23andMe needs to make it more obvious to customers that they will do this research using the DNA.
But as an informed consumer, I was happy to become a customer and participant in this fascinating system.