I've suspected that for a long time.
The only positive outcome that I can think of is that way in the future, such stored information could be used to solve crimes.
The article said they use it for warrantless searches:
https://www.lifesitenews.com/analysis/state-governments-collect-the-dna-of-nearly-every-newborn-baby-in-the-us-most-parents-dont-even-know/?utm_source=popular