What an absolute failure of the legal system to understand the issue at hand and appropriately assign liability.
Here's an article with more context, but tl;dr the "hackers" used credential stuffing, meaning that they used username and password combos that were breached from other sites. The users were reusing weak password combinations and 23andme only had visibility into legitimate login attempts with accurate username and password combos.
Arguably 23andme should not have built out their internal data sharing service quite so broadly, but presumably many users are looking to find long lost relatives, so I understand the rationale for it.
Thus continues the long, sorrowful, swan song of the password.