The problem is that if your sibling or cousin submits DNA to GEDmatch, they've in effect submitted the entire extended family's DNA. You cannot go take down the

The problem is that if your sibling or cousin submits DNA to GEDmatch, they've in effect submitted the entire extended family's DNA. You cannot go take down the DNA your cousin submitted to GEDmatch, even though it affects your privacy. You cannot even take down the DNA your identical twin submitted to GEDmatch, even though it really is the _same_ as yours. The laws simply have not yet caught up to the new tech.