Police could use genetic information it gets from those companies to identify you in a criminal investigation, even if you’ve never used one of those services.
“Yeah, god forbid you should be implicated in a crime you did.”
So The Fifth Amendment is a bother for you? But what the hell, we’re “safer” because of the violation of our rights, so it’s really o.k, right?
Your DNA doesn’t have to be an exact match, just close enough.
And if think that’s BS, just wait until the insurance companies, and your employers get a hold of that information.
Once that door is opened, it will be close to impossible to shut it.
Or did not do.
A bunch of adoptees use this service to find out where they came from, at least in general.
What about being implicated in a crime you did not do? I would err on the side of privacy and being anonymous.
Years ago when working as an IT systems engineer, I and others were fingerprinted to continue having access to the computer mainframe facilities. We were told it would never be used against us nor handed over to authorities, it was only for authorizing access to rooms. Not too long after, managers were handing it over to police because of suspected theft. So, it was all a lie.
Let's say you had innocently placed your hand on something and left your fingerprint there. Then that object becomes an article implicated in a crime. Now you are a suspect in that crime, even though you are innocent. It happens, and causes grief to you should that happen. Possibly even false conviction and incarceration. I would be wary of those who say "Relax, you're perfectly safe and what are you worried about?".