The very first post of TFA lays out that they've been sending emergency-level alerts for a while (aside from that being a year-long issue):
> 4 meetings, 124 emails, and two phone calls a day for the last 14 days have warned them of this.
There's only so much you can do.
> If legal doesn’t know how to get the CEO’s attention, then something is very wrong.
From the thread legal (and / or compliance) is the setter of the issue, and was well aware that it would cause issues (for a minority), but they were not in charge of resolution. And from downthread posts, they likely extensively documented their warnings:
> oh I’m absolutely backing the horse with the 3 miles of email threads proving this
And methinks legal and compliance had very much planned for the issue coming to a head, because they were getting fed up with being blow off, and having to shoulder the legal or regulatory risk.