Could you articulate in detail what you think might happen?

My genome is publically available and from what I can tell there is no extra cost to me over the past 10+ years that it's been around.

Advertisers would get their hands on your data and figure out you’re predisposed to certain foods and stress eating. With that information, they can tailor ads more specific to your genetic traits.

You'll pay for it more if your health or children suffer from preventable genetic conditions though...

You can abstain from testing, and still, much can be inferred about you if anyone in your family tree decides to take the test you declined.

ignorance is scary but fortunately very strong medical privacy laws exist

Thank god for privacy laws! No corporation has ever violated those for profit. And laws never change, right?

In Canada, the least-trustworthy people I've ever dealt with have been medical doctors, lawyers, politicians, bureaucrats, or some mix of those.

I can't trust such people to put in place and operate any system that truly protects medical privacy.

After the very recent forced masking and "vaccine passports" debacles (which inherently forced the public disclosure of what should be private medical information), and the related coercion and forcing of unwanted medical procedures that such "professionals" advocated for and participated in, it should be clear that they don't take medical privacy seriously.

>forced masking and "vaccine passports"

Oh, you're one of those

You might get cheaper insurance if it shows you as low risk?

Or, if you're unlucky, more expensive insurance in the future if you're high risk.