[epicide]

Nobody has perfect 100% individual choice/freedom. By itself, maximizing for it is a non-argument. The best explanation I've heard is that "my rights end where yours begin (and vice versa)". That is not an easy line to draw, so the debate becomes where exactly do we, as a society, decide to draw that line. (Noting that this also is never a singular, fixed answer)

Even without defining a specific model around how genetic data should be handled, I think it's more than fair to say that most people right now don't even consider how their choice to sign up for 23andme might affect their relatives (already born or otherwise). Even if they do, in my experience, it's only to a very surface-level degree.