I mean... what could possibly go wrong... First medical research companies (which will lead to insurance companies, who can then deny coverage based on genetics), then the government (who will undoubtedly end up arresting the wrong person based on sketchy DNA evidence)...
The decision by a prominent consumer DNA-testing company to share data with federal law enforcement means investigators have access to genetic information linked to hundreds of millions of people.
http://www.bloomberg.com/news/articles/2019-02-01/major-dna-testing-company-is-sharing-genetic-data-with-the-fbi

What is the point of rules that are not enforced?