You nailed that one. This should scare the living daylights out of everyone.
You can change your appearance, your IP address, your accounts, your passwords, even your driver's license and ssn ("identity").
But you can't change your DNA, fingerprints, retinal scans or other biodata. Those are permanent markers. Once anyone has that stuff you have lost your ability to be anonymous in any way for the rest of your life.
I'm amazed at how casually people give up their privacy for convenience.
You are correct on all aspects.
There is a couple of more scary things re a central storage repository of your DNA and others:
1. Insurance companies and other people in the medical business would have access to your DNA profile. Then, they can cancel policies, never sign policies and charge you even more. After a couple of years of DNA collection, only the perfects might be able to get insurance.
2. Some of us might have a DNA code that is worth billions of $’s to some big DNA pharma company. They might offer you a lot of money to patent and copyright your DNA if they were reputable. Others might just monitor you and use your DNA when you have regular blood tests done with your blood or worse to get your blood/DNA.
So as of now, we have NSA monitoring all of our phone calls, internet interactions and communication sites, all of the social sites, banks with credit reports going back for decades, Facial identification data basing and probably millions of DNA samples, including ones we don’t know about. When, we have blood tests, urine tests or what ever tests using our body fluids or tissues, is that lab sending DNA results to a central collection spot for NSA?