From a PSA stand point, 23andMe makes a really good point here.
From a Legal / Responsible Data Custodian perspective, it's the same collective responsibility bullshit that the oil industry likes to shit out about climate change.
The issue isn't just reuse of passwords. Only about 14,000 accounts were breached because of bad passwords. The problem is that those 14k accounts allowed bad actors to access the personal information of nearly 7 million people. It's less "you shouldn't have reused your password," it's more "your neighbor's cousin's sister-in-law's nephew shouldn't have reused his password"
While it's not the point 23andMe wants to make here, it is an absolutely horrible idea to allow a company to access, catalog and sell your DNA information. Shame they didn't touch on that point.