I did not see the episode, but I am addressing privacy issues in general
(and building on Deb's excellent points):
* Even if you opt to have your individual DNA shared, no one will be
able to, for example, access your bank account or use your credit card.
No one is going to clone you.
* The affordability and accessibility of DNA testing -- and the
resulting big data -- are having a profound impact on medical research.
Someday you will be able to get genomics-guided precision medicine,
treatments and medications specifically customized to your DNA.
* Governments are quietly assembling their own DNA databases. In the
United States, for example, the FBI manages a federal DNA database that
might already have your DNA. Tools for DNA capture and analysis are
readily available; we can manage them to protect people but they are not
going to disappear.
On the plus side, taking one of the reputable tests (and not all of them
are) can help you solve family mysteries and track down relatives as
well as give you insights into potential medical conditions.
JoAnne Goldberg - Menlo Park, California; GEDmatch M131535
BLOCH, SEGAL, FRIDMAN, KAMINSKY, PLOTNIK/KIN -- LIthuania
GOLDSCHMIDT, HAMMERSCHLAG,HEILBRUNN, REIS(S), EDELMUTH, ROTHSCHILD, SPEI(Y)ER -- Hesse, Germany
COHEN, KAMP, HARFF, FLECK, FRÖHLICH, HAUSMANN, DANIEL -- Rhineland, Germany